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@ -1104,29 +1104,23 @@
- advantages and disadvantages of distributed databases
- DONE XML
- LATER XML definition and basic concepts
collapsed:: true
- eXtensible Markup Language
- A meta-language (i.e. a language for describing other languages) that
enables designers to create their own customised tags to provide
functionality not available with HTML.
- LATER Relational model versus XML
collapsed:: true
- SQL
collapsed:: true
- is a special-purpose programming language
- You can: manage data in a relational databases.
- XML
collapsed:: true
- is a markup specification language
- You can: design ways of describing information (text or data), usually for storage, transmission, or processing by a program (you can use it in combination with a programming language).
- It says nothing about what you should do with the data (although your choice of element names may hint at what they are for).
- LATER Well-formed XML, Valid XML
collapsed:: true
- Adheres to basic structural requirements - Single root element
- Matched tags, proper nesting
- Unique attributes within elements
- LATER DTD, XSD
collapsed:: true
- DTD: Defines the valid syntax of an XML document
- XSD: a more comprehensive method of defining content model of
an XML document.