Systems and methods for supporting inheritance for user-defined types
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United States of America Patent
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May 26, 2009
Grant Date -
Aug 11, 2005
app pub date -
May 3, 2004
filing date -
Feb 10, 2004
priority date (Note) -
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Abstract
Various embodiments of the present invention are directed to a database with an extensible type system for at least one user-defined type that comprises information for describing its structure as well as information for describing an inheritance relationship between itself and another user-defined type (either a subtype or a supertype/base type). For certain embodiments, the user-defined type is defined in something other than Sequential Query Language (SQL) statement such as, for example, a Common Language Runtime (CLR) statement, a statement in C, C++, and C# (“C-sharp”), and/or a visual basic statement. In any event, several embodiments are further directed to a system wherein the database is aware of the inheritance relationship between two user-defined types by an explicit registration of the user-defined types with said database.
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