SIGMOD '86 Proceedings of the 1986 ACM SIGMOD international conference on Management of data
IFO: a formal semantic database model
ACM Transactions on Database Systems (TODS)
Combining language and database advances in an object-oriented development environment
OOPSLA '87 Conference proceedings on Object-oriented programming systems, languages and applications
Modeling inheritance and genericity in object-oriented databases
Lecture notes in computer science on ICDT '88
A theoretical underlying dual model for knowledge-based systems
ISCI '90 Proceedings of the first international conference on systems integration on Systems integration '90
A formal approach to object-oriented databases
Data & Knowledge Engineering
Database description with SDM: a semantic database model
ACM Transactions on Database Systems (TODS)
Making smalltalk a database system
SIGMOD '84 Proceedings of the 1984 ACM SIGMOD international conference on Management of data
On the Power to Derive External Schemata from the Database Schema
Proceedings of the Second International Conference on Data Engineering
ACM SIGMOD Record
The OODB path-method generator (PMG) using precomputed access relevance
CIKM '93 Proceedings of the second international conference on Information and knowledge management
Value propagation in object-oriented database part hierarchies
CIKM '93 Proceedings of the second international conference on Information and knowledge management
Object orientation in multidatabase systems
ACM Computing Surveys (CSUR)
The VLDB Journal — The International Journal on Very Large Data Bases
The OODB path-method generator (PMG) using access weights and precomputed access relevance
The VLDB Journal — The International Journal on Very Large Data Bases
Ownership as a conceptual modeling construct
Data & Knowledge Engineering
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A class specification contains both structural aspects and semantic aspects. We introduce a mathematically based distinction between structural and semantic aspects. We show how this distinction is used to identify all structural aspects of a class specification to be included in the object type of a class. The model obtained is called the Dual Model due to the separation of structure and semantics in the class specification. Advantages of the separation of structure and semantics have been discussed in previous papers and include separate hierarchies for structural and semantic aspects, refined inheritance mechanisms, support of physical database design and structural integration which is impossible in other models.