The XML expression consists of the initial letters of the eXtensible Markup Language words. XML is designed to store and transfer data. XML is designed to be both human and machine readable.
@ocdb
@albro
Reminder
Don't forget me this weekend!
See another example of XML file structure:
@albro
100
I Love Hive Blockchain
200
@ocdb
100
@ocdb and @albro are friends.
100000
@leo.voter
100
@leo.voter hate @albro!
1000000
@xeldal
100
@xeldal love @lbro!
20000
@mahdiyari
100
@mahdiyari and @albro are the best friends
95000
XML plays an important role in many IT systems. XML is often used for data distributed on the Internet and A deep learning of XML is very important for all types of software developers.
In response to the question of what XML is, I must say that XML is a tool independent of software and hardware to store and transfer information.
This may be a little hard to understand, but XML does nothing. The following hiveblock is a note from @albro to
@ocdb, saved by XML:
@ocdb
@albro
Reminder
Don't forget me this weekend!
The XML file above is quite a self-describing file :
But still the XML file above has not done anything. XML just puts information in tags. Now someone has to build a software to send, receive, store or display it. What should be seen as a hiveblock in the XML file above is shown in the image below:
XML and HTML are designed for different purposes:
The XML language has no predefined tags. The tags that were in the XML code of the above example (such as and ) are not standard tags defined in XML. These tags are "created" by the author of the XML file. HTML works with predefined tags such as , , and... In XML, the author of the file creates both the tags and the structure of the XML document.
Most XML programs work as expected unless new data is added (or deleted). Imagine an XML application designed to display the original hiveblock.xml (including the tags). Then consider the new version of the hiveblock.xml file, with and added and removed.
Since the file is built in XML format, the old version of the program can still work:
2023-09-28
1:00
@ocdb
@albro
Don't forget me this weekend!
Many computer systems contain information in incompatible formats with other formats. Data exchange between incompatible systems (or upgraded systems) is a time-consuming task for web developers. Huge amounts of data must be converted, and inconsistent or incompatible data is often lost.
XML stores data in raw text and this method is a software and hardware independent way to store, exchange and share information. XML also makes it possible to expand or upgrade to new operating systems, new applications, or new browsers without losing data. With XML, information can be accessible to all kinds of users, including humans, computers, audio devices, news reader systems, etc.