Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
CLU reference manual
Programming in Prolog (2nd ed.)
Programming in Prolog (2nd ed.)
Groundwork for an object database model
Research directions in object-oriented programming
The functional data model and the data languages DAPLEX
ACM Transactions on Database Systems (TODS)
Hierarchical Data-Base Management: A Survey
ACM Computing Surveys (CSUR)
A relational model of data for large shared data banks
Communications of the ACM
A Foundation for Evolution from Relational to Object Databases
EDBT '88 Proceedings of the International Conference on Extending Database Technology: Advances in Database Technology
Model instantiation for query driven simulation in active KDL
ANSS '90 Proceedings of the 23rd annual symposium on Simulation
Query driven simulation using SIMODULA
ANSS '89 Proceedings of the 22nd annual symposium on Simulation
Collections of Objects in SQL3
VLDB '93 Proceedings of the 19th International Conference on Very Large Data Bases
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There is a requirement for a stronger treatment of intentional concepts and more general inferential ability within database systems. A framework for achieving this will be described in terms of extensions to an object data model.The type Concept is introduced into the model as a subtype of Action. Intentional concepts may then be defined as filters or generators, depending on the nature of the defining formula. In either case, the dual action should be available—provided automatically by the system or explicitly by the user.Finally, sets and types are treated as special cases of extensional concepts, leading to a novel structure of the hierarchy of system types.