XML is an excellent means for transmitting data through numerous platforms and systems and is widely used widely in web applications which includes in web services and many others. Nevertheless it has failed to have as considerable an effect in programming than it has in internet technologies.
o:XML is a more recent venture which aims to overcome that lack of achievement by featuring extended programming abilities without the ordinary verbose code that would be created by utilizing XML.
It’s also important to understand that XML is purely a mark-up language and for that reason in itself XML can't be used to write programs or software since it cannot issue instructions or perform as an executable file etc.
Furthermore XML tags carry absolutely no semantic meaning as tags can be done by the writer without following any protocols or rules, whereas proper programming languages have precise meaning and rules in the use o their tags.
As an example, in case you wanted a static block, in Java you'd probably write; class StaticBlock, however xml tags can be anything you would like them to be as you write your own tags.
o:XML looks rather promising and could one day make it very easy to code XML applications by providing precisely the same benefits for programming that XML offers for representing data.
o:XML is far more flexible, much less verbose and also has exception handling, namespaces, threads, regular expressions and a whole bunch of really useful programming abilities, some have even compared it to a mix of Python and XML.
o:XML is what's known as object oriented, which means that basically everything is an object and every object has a type, types are String, Element, Document and so on. You could also construct your own types and functions
Just like you can invoke function on nodes and node sets in languages like Java and C , it's easy to likewise do the same with o:XML, actually you utilize o:Path to find and select nodes and even to change them.
This is hugely invaluable as you're able basically put the strength of XML to optimum use including the tools and technologies which have been produced as a result of XML. In addition you have the added benefit that your code will work seamlessly with just about every other XML vocabulary.
In short o:XML is really functional and easy to work with, because of this it is developed to take care of most problems in a practical way, in fact in contrast to most other technologies, it actually provides far better, much simpler and swifter solutions for nearly the majority of software.
Which is not to suggest that XML is likely to be obsolete anytime soon, it's still a crucial and versatile solution for transporting data on the web and in ensuring cross browser compatibility of websites and web pages.
Sunday, 29 June 2014
Friday, 23 May 2014
Working with SOAP in XML
SOAP means Simple Object Access Protocol, its goal is to encourage the exchange of structured information in the use of Web services software. To perform this SOAP relies upon XML for its message style and on Hypertext Markup Protocol (HTTP) and Simple Mail Transfer Protocol (SMTP) for its transmission.
In short SOAP is amazingly handy and necessary for application development, permitting internet communication in between programs.
One way that it does this over HTTP is to employ Remote Procedure calls (RPCs), this makes it much simpler and simpler for applications to employ network protocols including opening and closing sockets, formatting requests, listening on ports and decoding responses and a lot more. To make this happen, you simply write a basic procedure call.
It’s also useful over making use of middleware due to the extra difficulties of utilizing middleware for example trying to get passed firewalls which are generally set to block non HTTP traffic.
Its also reasonably inadequate in regards to deployment, for this reason you are going to actually find it easier and quicker to deploy a website than a middleware dependent application.
For these points plus more, designers prefer to utilize SOAP given that it overcomes the middleware issues and it in addition has the equivalent features as an RPC.
Its also important to notice that SOAP has evolved together with the world wide web and human activity in terms of how that data is absorbed over the internet, as an example from the outset the net was about information consumption and therefore internet sites were being organized tomeet this particular need, today their is more interactive engagement with a lot more apps staying utilized as a consequence more websites being created to service software rather then humans. RSS is a fantastic example of working with XML to develop rrnternet sites for software rather than for humans.
A large number of pages are now constructed using XML so it is ever more essential that programs and information data is organised to work with XML.
The subsequent evolution was from XML to XML-RPC, which generally enabled developers to connect two formerly unrelated fields, it varies from RPC in that it employs an XML and HTTP protocol to carry a request on the network, rather than binary protocol of RPC.
One of the very first such implementations is most likely XML-RPC. At a bird's-eye view, XML-RPC is similar to usual RPC, nonetheless the binary protocol employed to carry the request on the network happens to be substituted with XML and HTTP. XML-RPC also supports arrays and structures (also called records) through the array and struct elements.
Last but not least, through the evolution of RPC and XML-RPC we arrived at SOAP, as a consequence of countless defects of the methods, a new protocol was required to transfer data to web applications.
After considerable collaboration between IBM and XML RPC developers, the protocol was enhanced and upgraded to SOAP, this new protocol is quite potent and it likewise broadens the field to cover applications aren't adequately labeled as remote procedure calls.
If you are considering making use of XML and SOAP, you may also use development tools such as Liquid XML Studio to produce your code, this has an added advantage of being able to make use of extensive libraries together with code validation, ideal when you expect to write hundreds or thousands of lines of code.
In short SOAP is amazingly handy and necessary for application development, permitting internet communication in between programs.
One way that it does this over HTTP is to employ Remote Procedure calls (RPCs), this makes it much simpler and simpler for applications to employ network protocols including opening and closing sockets, formatting requests, listening on ports and decoding responses and a lot more. To make this happen, you simply write a basic procedure call.
It’s also useful over making use of middleware due to the extra difficulties of utilizing middleware for example trying to get passed firewalls which are generally set to block non HTTP traffic.
Its also reasonably inadequate in regards to deployment, for this reason you are going to actually find it easier and quicker to deploy a website than a middleware dependent application.
For these points plus more, designers prefer to utilize SOAP given that it overcomes the middleware issues and it in addition has the equivalent features as an RPC.
Its also important to notice that SOAP has evolved together with the world wide web and human activity in terms of how that data is absorbed over the internet, as an example from the outset the net was about information consumption and therefore internet sites were being organized tomeet this particular need, today their is more interactive engagement with a lot more apps staying utilized as a consequence more websites being created to service software rather then humans. RSS is a fantastic example of working with XML to develop rrnternet sites for software rather than for humans.
A large number of pages are now constructed using XML so it is ever more essential that programs and information data is organised to work with XML.
The subsequent evolution was from XML to XML-RPC, which generally enabled developers to connect two formerly unrelated fields, it varies from RPC in that it employs an XML and HTTP protocol to carry a request on the network, rather than binary protocol of RPC.
One of the very first such implementations is most likely XML-RPC. At a bird's-eye view, XML-RPC is similar to usual RPC, nonetheless the binary protocol employed to carry the request on the network happens to be substituted with XML and HTTP. XML-RPC also supports arrays and structures (also called records) through the array and struct elements.
Last but not least, through the evolution of RPC and XML-RPC we arrived at SOAP, as a consequence of countless defects of the methods, a new protocol was required to transfer data to web applications.
After considerable collaboration between IBM and XML RPC developers, the protocol was enhanced and upgraded to SOAP, this new protocol is quite potent and it likewise broadens the field to cover applications aren't adequately labeled as remote procedure calls.
If you are considering making use of XML and SOAP, you may also use development tools such as Liquid XML Studio to produce your code, this has an added advantage of being able to make use of extensive libraries together with code validation, ideal when you expect to write hundreds or thousands of lines of code.
Sunday, 13 April 2014
The main building blocks of XML
XML is a mark-up language, it will be much like HTML in that contents are included within a group of opening and closing tags. However XML is different from HTML in one important aspect, XML tags do not possess semantic meaning, in XML you could develop your own tags, in HTML you can just use valid HTML tags.
The very first building block of xml we will examine are elements, a typical xml file will contain a lot of elements, usually plenty of tags with each tag made up of bits of data.
For example, let’s say we have an xml file of products, this will comprise of supplier codes, price, description, colour etc. The colour could well be shown as follows in an xml file;
<colour> red</colour>
Both the tags above are the start and end tags, with the end tag made up of a "/" which indicates close of the tag.
Taken together with the start and end tag and the contents in-between, this is an element.
Elements are also referred to by their name or type, in this situation the element above is a name element or type.
It's advisable to stick to some simple rules and also guidelines on naming your elements, primary rule is always that names need to be descriptive as well as indicative of the subject matter within the element, this will give your xml field substance and make it easy for other people to follow and fully understand.
As an example, an element that contains serial numbers can be more appropriately named “serial numbers” rather then “numbers” or “56879” which has no meaning to anybody.
Additionally, there are a number of critical naming conventions that you must follow, valid names ought to begin with a letter or one of a few punctuation characters, followed by letters, digits, hyphens, underscores, or colons.
Be aware also that xml is case sensitive although as yet you won't notice any formal conventions on the way you should utilize uppercase, lower case or even mixed case characters.
Text can be divided into markup data and character data. Character data is the information kept in the document and markup data is the tags and syntax.
XML recognises any valid Unicode characters including all the 26 letters of the alphabet and 0-9 digits, and in addition all of the 33 characters of the Cyrillic alphabet.
You can read and process xml data with special software often known as an xml parser, the xml parser operates by parsing each character in order to create a representation of that data, the parsed data is known as PCDATA.
If you wish to detour around certain data i.e. you do not want it to be parser by the software, you can certainly accomplish that by using a CDATA section, the parser will likely then disregard any data comprised within a CDATA section.
The subsequent block we are going to take a look at is referred to as an attribute, they work well for associating name/value pairs with elements, as an illustration in an element concerning name, an attribute might be first and last name.
Attributes can be one of three different types: strings, tokenized types, or enumerations.
The very first building block of xml we will examine are elements, a typical xml file will contain a lot of elements, usually plenty of tags with each tag made up of bits of data.
For example, let’s say we have an xml file of products, this will comprise of supplier codes, price, description, colour etc. The colour could well be shown as follows in an xml file;
<colour> red</colour>
Both the tags above are the start and end tags, with the end tag made up of a "/" which indicates close of the tag.
Taken together with the start and end tag and the contents in-between, this is an element.
Elements are also referred to by their name or type, in this situation the element above is a name element or type.
It's advisable to stick to some simple rules and also guidelines on naming your elements, primary rule is always that names need to be descriptive as well as indicative of the subject matter within the element, this will give your xml field substance and make it easy for other people to follow and fully understand.
As an example, an element that contains serial numbers can be more appropriately named “serial numbers” rather then “numbers” or “56879” which has no meaning to anybody.
Additionally, there are a number of critical naming conventions that you must follow, valid names ought to begin with a letter or one of a few punctuation characters, followed by letters, digits, hyphens, underscores, or colons.
Be aware also that xml is case sensitive although as yet you won't notice any formal conventions on the way you should utilize uppercase, lower case or even mixed case characters.
Text can be divided into markup data and character data. Character data is the information kept in the document and markup data is the tags and syntax.
XML recognises any valid Unicode characters including all the 26 letters of the alphabet and 0-9 digits, and in addition all of the 33 characters of the Cyrillic alphabet.
You can read and process xml data with special software often known as an xml parser, the xml parser operates by parsing each character in order to create a representation of that data, the parsed data is known as PCDATA.
If you wish to detour around certain data i.e. you do not want it to be parser by the software, you can certainly accomplish that by using a CDATA section, the parser will likely then disregard any data comprised within a CDATA section.
The subsequent block we are going to take a look at is referred to as an attribute, they work well for associating name/value pairs with elements, as an illustration in an element concerning name, an attribute might be first and last name.
Attributes can be one of three different types: strings, tokenized types, or enumerations.
Saturday, 15 March 2014
XML and DataSet Objects
This article will definitely examine DataSet objects and in what ways XML is employed when working with DataSets. Let’s begin with looking at precisely what a DataSet is.
A DataSet is essentially an in-memory depiction of data, because the data itself can be kept to memory, it may be adjusted also it can be written back to the data source. Additionally it may comprise one or more DataTable objects.
The DataTable objects themselves could have rows and columns, called DataRows and DataColumns or perhaps a primary key, foreign key, and constraint and additionally relation information concerning the data in the DataTable objects.
The DataTable object symbolizes every table inside of a DataSet; and as a result the DataColumn object every single column within a DataTable and the DataRow object every row within the DataTable.
It is additionally important to consider that the DataSet would not validate the XML data against the schema; it simply uses it to infer the structure needed for the tables in the DataSet. The System.Data.DataSet class is provided to support DataSet in .NET.
What’s the DataSet Class in .Net?
The DataSet class in .NET is a fairly handy .Net aspect that allows you to build applications and store data in an XML file instead of having to hold and recover it from a database.
This can be done thanks to the considerable XML support showcased in the DataSet class for reading and writing data as XML, this can include the following techniques which I will explain in greater detail, GetXml Method, GetXmlSchema Method, InferXmlSchema Method, WriteXml Method, WriteXmlSchema Method, ReadXml Method, ReadXmlSchema Method.
So let’s examine each one of these approaches in a little more depth, I will show you the most suitable syntax as well.
The GetXml Method
This approach returns a string containing an XML representation of the actual data which is saved in the DataSet, the format is public string GetXml();
The GetXmlSchema Method
This method returns the schema for an XML expression of the information saved in the DataSet, it delivers the XML as a string so its a lot more verbose than the WriteXmlSchema approach to write XML to a file. The syntax is public string GetXmlSchema();
InferXmlSchema Method
This procedure can be applied XML schema to the DataSet by taking an XML document provided in a TextReader, XmlReader, Stream object or a particular hard disk drive file. The syntax is;
public void InferXmlSchema(string,string[]);
public void InferXmlSchema(TextReader,string[]);
public void InferXmlSchema(Stream,Stream[]);
public void InferXmlSchema(XmlReader,string[]);
WriteXml Method
This approach writes the XML illustration of the data in the DataSet object to a TextWriter object, an XmlWriter object, a Stream object or instantly to a specified disk file. The syntax is;
public void WriteXml(string);
public void WriteXml(TextWriter);
public void WriteXml(Stream);
public void WriteXml(XmlWriter);
WriteXmlSchema Method
This process creates the XML schema of the DataSet to a TextWriter object, an XmlWriter object, a Stream object or right to a specified hard disk drive file. The syntax is;
public void WriteXmlSchema(string);
public void WriteXmlSchema(TextWriter);
public void WriteXmlSchema(Stream);
public void WriteXmlSchema(XmlWriter);
ReadXml Method
This method scans the XML data (including a schema when present) into the DataSet from a TextReader, XmlReader, Stream object or straight to a specific hard drive file. The syntax is;
public void ReadXml(string);
public void ReadXml(TextReader);
public void ReadXml(Stream);
public void ReadXml(XmlReader);
ReadXmlSchema Method
This technique deciphers the XML schema explaining the contents of the DataSet to a TextReader, XmlReader, and Stream object or right to a specified hard disk drive file. The syntax is;
public void ReadXmlSchema(string);
public void ReadXmlSchema(TextReader);
public void ReadXmlSchema(Stream);
public void ReadXmlSchema(XmlReader);
Make sure that you bear mind that the preceding methods with DataSet will be more designed for working with small amounts of data a result of quantity of memory that is required, working copious amounts of information this may soon engulf just about any large software.
A DataSet is essentially an in-memory depiction of data, because the data itself can be kept to memory, it may be adjusted also it can be written back to the data source. Additionally it may comprise one or more DataTable objects.
The DataTable objects themselves could have rows and columns, called DataRows and DataColumns or perhaps a primary key, foreign key, and constraint and additionally relation information concerning the data in the DataTable objects.
The DataTable object symbolizes every table inside of a DataSet; and as a result the DataColumn object every single column within a DataTable and the DataRow object every row within the DataTable.
It is additionally important to consider that the DataSet would not validate the XML data against the schema; it simply uses it to infer the structure needed for the tables in the DataSet. The System.Data.DataSet class is provided to support DataSet in .NET.
What’s the DataSet Class in .Net?
The DataSet class in .NET is a fairly handy .Net aspect that allows you to build applications and store data in an XML file instead of having to hold and recover it from a database.
This can be done thanks to the considerable XML support showcased in the DataSet class for reading and writing data as XML, this can include the following techniques which I will explain in greater detail, GetXml Method, GetXmlSchema Method, InferXmlSchema Method, WriteXml Method, WriteXmlSchema Method, ReadXml Method, ReadXmlSchema Method.
So let’s examine each one of these approaches in a little more depth, I will show you the most suitable syntax as well.
The GetXml Method
This approach returns a string containing an XML representation of the actual data which is saved in the DataSet, the format is public string GetXml();
The GetXmlSchema Method
This method returns the schema for an XML expression of the information saved in the DataSet, it delivers the XML as a string so its a lot more verbose than the WriteXmlSchema approach to write XML to a file. The syntax is public string GetXmlSchema();
InferXmlSchema Method
This procedure can be applied XML schema to the DataSet by taking an XML document provided in a TextReader, XmlReader, Stream object or a particular hard disk drive file. The syntax is;
public void InferXmlSchema(string,string[]);
public void InferXmlSchema(TextReader,string[]);
public void InferXmlSchema(Stream,Stream[]);
public void InferXmlSchema(XmlReader,string[]);
WriteXml Method
This approach writes the XML illustration of the data in the DataSet object to a TextWriter object, an XmlWriter object, a Stream object or instantly to a specified disk file. The syntax is;
public void WriteXml(string);
public void WriteXml(TextWriter);
public void WriteXml(Stream);
public void WriteXml(XmlWriter);
WriteXmlSchema Method
This process creates the XML schema of the DataSet to a TextWriter object, an XmlWriter object, a Stream object or right to a specified hard disk drive file. The syntax is;
public void WriteXmlSchema(string);
public void WriteXmlSchema(TextWriter);
public void WriteXmlSchema(Stream);
public void WriteXmlSchema(XmlWriter);
ReadXml Method
This method scans the XML data (including a schema when present) into the DataSet from a TextReader, XmlReader, Stream object or straight to a specific hard drive file. The syntax is;
public void ReadXml(string);
public void ReadXml(TextReader);
public void ReadXml(Stream);
public void ReadXml(XmlReader);
ReadXmlSchema Method
This technique deciphers the XML schema explaining the contents of the DataSet to a TextReader, XmlReader, and Stream object or right to a specified hard disk drive file. The syntax is;
public void ReadXmlSchema(string);
public void ReadXmlSchema(TextReader);
public void ReadXmlSchema(Stream);
public void ReadXmlSchema(XmlReader);
Make sure that you bear mind that the preceding methods with DataSet will be more designed for working with small amounts of data a result of quantity of memory that is required, working copious amounts of information this may soon engulf just about any large software.
Sunday, 16 February 2014
XML and DataSet items
This article will have a look at DataSet objects and how XML can be used while running with datasets. Let's start by exploring what a dataSet is.
A dataSet is effectively an in-memory illustration of information, for the reason that data itself can be stored to memory, it may be changed and it can be written back to the data supply.
It may possibly additionally include a number of datatable items. The DataTable items themselves may have rows and columns, recognized as dataRows and dataColumns as well as a primary key, foreign key, and constraint and also relation information about the knowledge within the informationtable items.
The datatable item represents every table inside a dataSet; and as a result the dataColumn object every column within a datatable and the dataRow item every row within a datatable.
It is usually vital to understand that the DataSet does not validate the XML data against the schema; it simply uses it to infer the construction required for the tables within the DataSet. The utility data.DataSet magnificence is equipped to strengthen dataSet in .NET.
What’s the DataSet class in .Net?
The dataSet class in .net is a rather useful .net feature that allows you to construct programs and store data in an XML report fairly than having to store retrieve it from a knowledgebase.
So let’s take a look at each of those methods in a little more detail, i will be able to show you the right kind of syntax as well.
The GetXml Method
This means returns a string that accommodates an XML illustration of the particular data that is saved in the DataSet, the syntax is public string GetXml();
The GetXmlSchema Method
This method returns the schema for an XML representation of the data stored in the DataSet, it returns the XML as a string so its more verbose than the WriteXmlSchema method to write XML to a file. The syntax is public string GetXmlSchema();
InferXmlSchema Method
This method applies XML schema to the DataSet by means of taking an XML file supplied in a TextReader, XmlReader, flow item or a unique disk file. The syntax is;
public void InferXmlSchema(string,string[]);
public void InferXmlSchema(TextReader,string[]);
public void InferXmlSchema(Stream,Stream[]);
public void InferXmlSchema(XmlReader,string[]);
WriteXml Method
This method writes the XML representation of the data in the DataSet object to a TextWriter object, an XmlWriter object, a Stream object or directly to a specified disk file. The syntax is;
public void WriteXml(string);
public void WriteXml(TextWriter);
public void WriteXml(Stream);
public void WriteXml(XmlWriter);
WriteXmlSchema Method
This manner writes the XML schema of the DataSet to a TextWriter item, an XmlWriter object, a move item or instantly to a unique disk document. The syntax is;
public void WriteXmlSchema(string);
public void WriteXmlSchema(TextWriter);
public void WriteXmlSchema(Stream);
public void WriteXmlSchema(XmlWriter);
ReadXml Method
This manner reads the XML information (including a schema when present) into the DataSet from a TextReader, XmlReader, move object or directly to a certaindisk file. The syntax is;
public void ReadXml(string);
public void ReadXml(TextReader);
public void ReadXml(Stream);
public void ReadXml(XmlReader);
ReadXmlSchema Method
This means reads the XML schema describing the contents of the DataSet to a TextReader, XmlReader, and stream item or right away to a particular disk document. The syntax is;
public void ReadXmlSchema(string);
public void ReadXmlSchema(TextReader);
public void ReadXmlSchema(Stream);
public void ReadXmlSchema(XmlReader);
You should also endure mind that the above methods with DataSet are more suited for running with small quantities of information on account of the amount of memory that may be required, operating quite a lot of knowledge this will likely quickly weigh down any huge utility.
A dataSet is effectively an in-memory illustration of information, for the reason that data itself can be stored to memory, it may be changed and it can be written back to the data supply.
It may possibly additionally include a number of datatable items. The DataTable items themselves may have rows and columns, recognized as dataRows and dataColumns as well as a primary key, foreign key, and constraint and also relation information about the knowledge within the informationtable items.
The datatable item represents every table inside a dataSet; and as a result the dataColumn object every column within a datatable and the dataRow item every row within a datatable.
It is usually vital to understand that the DataSet does not validate the XML data against the schema; it simply uses it to infer the construction required for the tables within the DataSet. The utility data.DataSet magnificence is equipped to strengthen dataSet in .NET.
What’s the DataSet class in .Net?
The dataSet class in .net is a rather useful .net feature that allows you to construct programs and store data in an XML report fairly than having to store retrieve it from a knowledgebase.
This is possible thanks to the extensive XML support
featured in the DataSet class for reading and writing data as XML, this
includes the following methods which I will explain in detail, GetXml Method, GetXmlSchema Method, InferXmlSchema Method, WriteXml
Method, WriteXmlSchema Method, ReadXml Method, ReadXmlSchema Method.
So let’s take a look at each of those methods in a little more detail, i will be able to show you the right kind of syntax as well.
The GetXml Method
This means returns a string that accommodates an XML illustration of the particular data that is saved in the DataSet, the syntax is public string GetXml();
The GetXmlSchema Method
This method returns the schema for an XML representation of the data stored in the DataSet, it returns the XML as a string so its more verbose than the WriteXmlSchema method to write XML to a file. The syntax is public string GetXmlSchema();
InferXmlSchema Method
This method applies XML schema to the DataSet by means of taking an XML file supplied in a TextReader, XmlReader, flow item or a unique disk file. The syntax is;
public void InferXmlSchema(string,string[]);
public void InferXmlSchema(TextReader,string[]);
public void InferXmlSchema(Stream,Stream[]);
public void InferXmlSchema(XmlReader,string[]);
WriteXml Method
This method writes the XML representation of the data in the DataSet object to a TextWriter object, an XmlWriter object, a Stream object or directly to a specified disk file. The syntax is;
public void WriteXml(string);
public void WriteXml(TextWriter);
public void WriteXml(Stream);
public void WriteXml(XmlWriter);
WriteXmlSchema Method
This manner writes the XML schema of the DataSet to a TextWriter item, an XmlWriter object, a move item or instantly to a unique disk document. The syntax is;
public void WriteXmlSchema(string);
public void WriteXmlSchema(TextWriter);
public void WriteXmlSchema(Stream);
public void WriteXmlSchema(XmlWriter);
ReadXml Method
This manner reads the XML information (including a schema when present) into the DataSet from a TextReader, XmlReader, move object or directly to a certaindisk file. The syntax is;
public void ReadXml(string);
public void ReadXml(TextReader);
public void ReadXml(Stream);
public void ReadXml(XmlReader);
ReadXmlSchema Method
This means reads the XML schema describing the contents of the DataSet to a TextReader, XmlReader, and stream item or right away to a particular disk document. The syntax is;
public void ReadXmlSchema(string);
public void ReadXmlSchema(TextReader);
public void ReadXmlSchema(Stream);
public void ReadXmlSchema(XmlReader);
You should also endure mind that the above methods with DataSet are more suited for running with small quantities of information on account of the amount of memory that may be required, operating quite a lot of knowledge this will likely quickly weigh down any huge utility.
Tuesday, 12 March 2013
Generating XML Schemas and The Benefit of Schema Editors
An xml schema is a data file that's intended to explain the contents of an xml document as well as dictate and lay down rules to what can and cannot be contained in the xml file. These constraints are not just restricted to syntactical rules but can also specify what elements should be included, the order of these elements and child elements and so on.
Normally, an XSDL or XML Schema Definition Language is employed to apply these rules on data elements within an XM file.
An XML Schema is therefore incredibly helpful and versatile, allowing you to create very intricate and detailed data elements by specifying which elements inside of your data objects you may include or ought to include in your xml file, such as the string, integers etc.
A significant thing to be aware is the fact Schemas are also xml documents therefore they will also have to be valid and in accordance with normal syntax and other rules of xml as well, also referred to as a schema specification or even schema schema.
Additionally, there are additional meta languages that have been created solely to convey XML schemas, such as DTD, XML Schema and Relax NG. The latter two are a lot more developed and expressive than DTD, which happens to be actually rather limited with regard to capability.
To basically hook up your XML schema to your XML file (for validation functions as well as check the XML file is as per the specifications specified by the XML schema, the precise method depends on the schema language that you employ, one example is it could be as simple as calling in the schema from inside your xml file ie by adding the path via markup, generally known as imbedding or it could be via some other exterior method ie an xml schema validator, which might also be an online tool or even a computer's desktop based application.
To work with and change your XML schemas, you are able to use any of the free, open source and commercial XSD Editors that are available. These are typically available in a range of calibres, begining with the very basic and unimpressive functionality and feature sets, to some of the high end editors which feature graphical xml / schema representation and editing, along with syntax highlighting and source / wysiwyg view.
For minimal xml work, notepad or notepad , both available for free are more than up to the task, however, for more intense xml work, particularly development and professional xml coding, you should look at utilizing a commercial xml / xsd editor which will help you improve your development time and lessen errors in your code.
If you would like learn more about xml schemas or have an interest in finding sample xml schemas, think about reading a more advanced and comprehensive xml schema guide including the one here, http://www.liquid-technologies.com/Tutorials/XmlSchemas/XsdTutorial_01.aspx, or perhaps check out wiki or the w3c website.
The W3 schools webpage provides some good training for beginners however if you happen to be more advanced or intermediate programmer this website is just not for you because material is actually really simple and easy targeted at newbie learners.
Normally, an XSDL or XML Schema Definition Language is employed to apply these rules on data elements within an XM file.
An XML Schema is therefore incredibly helpful and versatile, allowing you to create very intricate and detailed data elements by specifying which elements inside of your data objects you may include or ought to include in your xml file, such as the string, integers etc.
A significant thing to be aware is the fact Schemas are also xml documents therefore they will also have to be valid and in accordance with normal syntax and other rules of xml as well, also referred to as a schema specification or even schema schema.
Additionally, there are additional meta languages that have been created solely to convey XML schemas, such as DTD, XML Schema and Relax NG. The latter two are a lot more developed and expressive than DTD, which happens to be actually rather limited with regard to capability.
To basically hook up your XML schema to your XML file (for validation functions as well as check the XML file is as per the specifications specified by the XML schema, the precise method depends on the schema language that you employ, one example is it could be as simple as calling in the schema from inside your xml file ie by adding the path via markup, generally known as imbedding or it could be via some other exterior method ie an xml schema validator, which might also be an online tool or even a computer's desktop based application.
To work with and change your XML schemas, you are able to use any of the free, open source and commercial XSD Editors that are available. These are typically available in a range of calibres, begining with the very basic and unimpressive functionality and feature sets, to some of the high end editors which feature graphical xml / schema representation and editing, along with syntax highlighting and source / wysiwyg view.
For minimal xml work, notepad or notepad , both available for free are more than up to the task, however, for more intense xml work, particularly development and professional xml coding, you should look at utilizing a commercial xml / xsd editor which will help you improve your development time and lessen errors in your code.
If you would like learn more about xml schemas or have an interest in finding sample xml schemas, think about reading a more advanced and comprehensive xml schema guide including the one here, http://www.liquid-technologies.com/Tutorials/XmlSchemas/XsdTutorial_01.aspx, or perhaps check out wiki or the w3c website.
The W3 schools webpage provides some good training for beginners however if you happen to be more advanced or intermediate programmer this website is just not for you because material is actually really simple and easy targeted at newbie learners.
Friday, 22 February 2013
The Benefits of XML & Java Over HTML
The omnipotent presence of the internet won't have escaped many people’s attentions unnoticed. In today’s modern age it is possible to browse the online market place and get goods in the convenience of any setting on the planet this includes whilst relaxing on the beachfront in Acapulco and not just from a PC or Laptop, today you can actually do all of this from a tablet or even just by your mobile device.
Nevertheless in spite of this level of popularity and also considerable use of HTML, it's in reality quite a limited technology and as the web has become more difficult and dynamic triggering new demands such as data interchange, interoperability etc. Which all HTML is unsuited for, and in reality wasn't ideal for in its original inception.
For that reason and numerous others, a new technology was in fact required, XML fulfilled the requirement perfectly. XML is a lot like HTML in syntax and structure, but it is way more than HTML, but if you happen to be conversant in HTML you'll not have any issues comprehending XML code.
XML is a markup language, also referred to as a meta language, meaning it is actually a language which you can use to define new markup languages i.e. you may make your own language to match your own application or domain.
Another fantastic aspect of XML would it be will work superbly with other related technologies for instance Java. For example, XML exposes the internet and java developing to portable non browser functionality. Quite simply, it frees and separates the content from the internet browser, exactly the same way as Java frees program behaviour from the platform. XML makes your web content available for other programs and applications in real time.
Because of this and much more, Java is an excellent technology to make use of with XML, specifically for data representation etc.
The limitation with HTML as said before, is that it had never been created for the modern demands of the internet, it’s more of a language about form rather than substance or content ie relating to the structure and presentation. This creates a significant challenge for innovative web developers attempting to create more versatile and robust information based systems or perhaps functionality.
Utilizing Java and XML you could carry out a lot of development tasks and build an array of versatile features as a consequence of benefits that follow which is not provided by HTML.
Extensible - design your very own markup tags to fit your personal needs.
Not display centric - HTML tags are pre-occupied with instructing the internet browser how to show information, they can't accomplish anything else, XML as well as java alternatively can easily separate content from structure so are suitable for network programs and able to complete other functions like business enterprise functions and even function with old legacy systems as well as brand new systems that come into being.
Directly reusable - it is possible to reuse your data several times and even alter your source data while not having to recreate your pages all over again or for it to break your website. For the reason that content and presentation are separated.
For all these reasons and much more, xml and java usually are much more helpful than plain HTML for developing trustworthy and robust systems and also functionality. Should you prefer a WYSIWYG user interface when coding and working with xml and java code, you should consider using an equally flexible and versatile xml toolkit or visit http://www.liquid-technologies.com/XmlDataBinding/Xml-Schema-To-Java.aspx for more information on xml java.
Nevertheless in spite of this level of popularity and also considerable use of HTML, it's in reality quite a limited technology and as the web has become more difficult and dynamic triggering new demands such as data interchange, interoperability etc. Which all HTML is unsuited for, and in reality wasn't ideal for in its original inception.
For that reason and numerous others, a new technology was in fact required, XML fulfilled the requirement perfectly. XML is a lot like HTML in syntax and structure, but it is way more than HTML, but if you happen to be conversant in HTML you'll not have any issues comprehending XML code.
XML is a markup language, also referred to as a meta language, meaning it is actually a language which you can use to define new markup languages i.e. you may make your own language to match your own application or domain.
Another fantastic aspect of XML would it be will work superbly with other related technologies for instance Java. For example, XML exposes the internet and java developing to portable non browser functionality. Quite simply, it frees and separates the content from the internet browser, exactly the same way as Java frees program behaviour from the platform. XML makes your web content available for other programs and applications in real time.
Because of this and much more, Java is an excellent technology to make use of with XML, specifically for data representation etc.
The limitation with HTML as said before, is that it had never been created for the modern demands of the internet, it’s more of a language about form rather than substance or content ie relating to the structure and presentation. This creates a significant challenge for innovative web developers attempting to create more versatile and robust information based systems or perhaps functionality.
Utilizing Java and XML you could carry out a lot of development tasks and build an array of versatile features as a consequence of benefits that follow which is not provided by HTML.
Extensible - design your very own markup tags to fit your personal needs.
Not display centric - HTML tags are pre-occupied with instructing the internet browser how to show information, they can't accomplish anything else, XML as well as java alternatively can easily separate content from structure so are suitable for network programs and able to complete other functions like business enterprise functions and even function with old legacy systems as well as brand new systems that come into being.
Directly reusable - it is possible to reuse your data several times and even alter your source data while not having to recreate your pages all over again or for it to break your website. For the reason that content and presentation are separated.
For all these reasons and much more, xml and java usually are much more helpful than plain HTML for developing trustworthy and robust systems and also functionality. Should you prefer a WYSIWYG user interface when coding and working with xml and java code, you should consider using an equally flexible and versatile xml toolkit or visit http://www.liquid-technologies.com/XmlDataBinding/Xml-Schema-To-Java.aspx for more information on xml java.
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