Using a few lines of JavaScript, you can read an external document and you can also update the information in the HTML document.
XML simplifies splitting data
In reality, the computerized system and the database contain data in incompatible formations. XML data is stored in text format. In this way, a data storage solution is ensured, and it is independent, in this way, the data could be easily divided in a simple manner by different applications.
With XML, data can be easily exchanged between incompatible systems, so you can eliminate one of the biggest problems for the web developer: the system for exchanging information on the Internet between two incompatible systems.
XML simplifies data transmissions
An upgrade, whether a hardware or software system is always a difficult process, since a huge amount of information has to be converted to the new format, a process which results in the loss of information incompatible with the new system.
XML data is stored in text files and could be easily imported by the new system. XML increases the availability of data.
Because XML is software and hardware independent, XML data is stored in text files, so it can be easily accessed by any system.
XML is used to create new programming languages on the internet. Here are a few examples:
- XHTML is the last version of HTML
- WSDL describes the available information
- WAP and WML as languages for portable devices
- RSS – the language for news channels
- RDF and OWL to describe the resources
- SMIL to describe multimedia content over the internet
If you want to understand XML, it’s easy to understand the idea of data markup. For centuries, people have created documents and marked them. For example, teachers always marked student paperwork. They told the students to move the paragraphs, clarify the sentences, correct the mistakes, etc. Marking a document means defining the structure, meaning and visual appearance of the information. If you’ve ever used the Follow Changes of MS Office feature, you’ve practically used an advanced form of markup.
Markup means using codes called tags to define the structure, visual aspects and meaning of the data.
The HTML code in this article is a great example of computerized markup. If you browse it (for IE browser, you will have to click on the button in the upper right corner, then Show source code. You will see a combination of tests with HTML tags, like <p> or <h2>. The tags from HTML and XML documents are easy to understand, since they are surrounded by “<>”, in the source code of this article, HTML tags have different roles, such as defining the start and end of each paragraph, and marking the locations of the images.
You will not have to write articles using these annotations. The software will translate your article into XML, so you can publish it online. In this way, information is stored, marked and transmitted over the Internet so that each program understands it.
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