A cost model for object-oriented query processing in object-oriented databases.

A Query Algebra for Object-Oriented Databases

We deene an algebra which synthesizes relational query concepts with object-oriented databases. The algebra fully supports abstract data types and object identity while providing associative access to objects, including a unique join capability. The operations take an abstract view of objects and access typed collections of objects through the public interface deened for the type. The algebra s...

Query Unnesting in Object-Oriented Databases

A Security Model for Object-Oriented Databases

The Integration of object-oriented programming concepts with databases IS one of the most significant advances In the evolutlon of database systems and several recent pro}ects are developing object-oriented databases Among the many Issues brought along by this combination, one that IS becoming important ISthe protection of information We develop here an authorization model for objectorlented da...

A Model for Active Object Oriented Databases

This paper presents a logical model for an active object oriented dntahaae. The main idea is to use standard concepts of OODB such aa encapsulation and inheritance, In particular triggers are special met,hods encapsulated in the appropriate object. The execution model uses nested transactions. The model is shown to he flexihle and to generalize previous proposals,

Query Processing Issues in Object - Oriented Knowledge