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What the heck is "schema"?
A schema defines how data is organized in some particular system. Some specific examples include:
- database schema
- this defines what tables a database has and what type of columns each table has.
- class schema
- this defines what types of data a class has as well as what methods (functions) it provides, their return values and arguments
- XML schema
- this defines what elements and their attributes are valid in an XML file. The schema is stored in either a DTD or an XSL file