Implementation of SQL3 Structured Types with Inheritance and Value Substitutability
نویسندگان
چکیده
منابع مشابه
Collections of Objects in SQL3
SQL3 generalizes the relational model into an object model offering abstract data types, multiple inheritance, and dynamic polymorphism. Tables may then contain collections (multisets) of objects, and sets and lists are defined as closely related collection types. By specifying an SQL-Table type template to correspond to the existing Table concept, it is possible to treat sets and lists as subt...
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تاریخ انتشار 1999