| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for use in a computer system to describe and obtain arbitrary data relating to a subject. SOLUTION: The method provides a meta-language 'Generic Object Oriented Description of Structured Data (GDL)' and a Parser. GDL allows a user to organize, define and describe subjects through the use of a schema known as a template. Templates can be used to define the semantics for each subject element as well as, to define how each element fits into a larger data framework. Through the concept of inheritance, templates can be extended and defined to various levels of nesting, while still having a common core of properties. GDL allows the features and attributes of a subject to be quickly and readily extended or modified by altering a source file. A GDL parser provides a structured and hierarchical representation of the information, validation of text-entry semantics and a means to traverse through information obtained from the source file. COPYRIGHT: (C)2003,JPO
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