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DotNet XML
What is XML?
XML stands for EXtensible Markup Language. XML is a markup language much like HTML. XML was designed to carry data, not to display data. XML tags are not predefined. You must define your own tags. XML is designed to be self-descriptive.
What is the version information in XML?
“Version” tag shows which version of XML is used.
What is ROOT element in XML?
Root element is the top most elements for a XML.
If XML does not have closing tag will it work?
No, every tag in XML, which is opened, should have a closing tag. For instance in the top if I remove tag that XML will not be understood by lot of application.
Is XML case sensitive?
Yes, they are case sensitive.
What is the difference between XML and HTML?
XML describes data while HTML describes how the data should be displayed. Therefore, HTML is about displaying information while XML is about describing information.
Is XML meant to replace HTML?
No, they both go together one is for describing data while other is for displaying data.
Can you explain why your project needed XML?
Remember XML was meant to exchange data between two entities as you can define your userfriendly tags with ease. In real world scenarios, XML is meant to exchange data. For instance,you have two applications who want to exchange information. However, because they work in two complete opposite technologies it is difficult to do it technically. For instance, one application is made in JAVA and the other in .NET. However, both languages understand XML so one of the applications will spit XML file, which will be consumed and parsed by other applications You can give a scenario of two applications, which are working separately and how you chose XML as the data transport medium.
What is DTD (Document Type Definition)?
It defines how your XML should structure. For instance in the above XML we want to make it compulsory to provide “qty” and “total cost”, also that these two elements can only contain numeric. Therefore, you can define the DTD document and use that DTD document with in that XML.
What is well formed XML?
If a XML document is confirming to XML rules (all tags started are closed, there is a root element etc) then it is a well-formed XML.

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