Explain the Importance of XML in Web Applications.

XML (Extensible Markup Language):

Extensible Markup Language or XML is a structure, tag-based language which is primarily user for transferring data. Information in XML are both human and machine readable. Tags and attributes, as in HTML is also used in XML but in a slightly stricter way than HTML. Beside that, user or developer can create his/her own tags in XML which can not be done HTML, and that is why it is called EXTENSIBLE.

Extensible Markup Language is quite similar to what HTML (Hypertext Markup Language). Both of these are used web technology. However, HTML is primarily used for displaying data or information and XML is used for carrying data or information from machine to machine, machine to human and human to human. However, XML can also be used for displaying data.

Explain the importance of XML in web applications.

Importance of XML in Web Applications:

1. Web Publishing:

XML allows user to create interactive pages that can display information which are stored in a structured that can be styled to meet display properties using XSL or XSLT. The reader or viewer can alter or customer those pages as per their need.

2. Searching:

XML contains data in definite tags which facilitate searching. For example, consider XML pages containing information of different books such as author name, publishing year etc. Now if we search the pages with author name, then this search directly search into author tags only and retrieve directly related data.

3. Independent Data Interchange

XML can be parsed by almost all programmable language thus an XML generated by human or an application can be parsed another human or application (even in different language). XML is highly adopted and used for interchanging data between web application using APIs. However, an API may return data in different formats such as JSON, but XML is widely used and popular

4. Granular Updates:

Document updates are slow as the entire document needs to be refreshed from the server. In uploading an XML document, only the part of the document is uploaded.

5. Metadata Applications:

XML makes it easier to express metadata in a portable, reusable format.

6. Assists in Data Assessment and Aggregation:

XML document structure is designed in such a way that the documents can be efficiently assessed and aggregated part by part. Another prolific advantage XML is its ability to feature any possible type of data. The data might range from active components such as ACTIVEX and Java applets or multimedia data such as video, image and sound. 

7. Custom Tags:

XML lets developer to use custom tags as per their need. This helps in storing data in meaningful tags that helps in understanding the context of the data.

  1. Uses of XML 
  2. Why Use XML In Web Design and Development
  3. Role of XML in Web Development



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