Using Schema Information for Querying Databases
نویسندگان
چکیده
We propose the set of operations for querying the conceptual schema of an objectoriented database. The operations form the basis of an algebra for objects called OVAL. They are de ned using the constructs introduced for our formalization of the object-oriented database model. The operations allow a user to query: (i) associations among individual objects, (ii) relationships between individual objects and class objects, and (iii) relationships among class objects themselves.
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