Semantic Query Language Research Articles

Supporting OIS design through semantic queries

Office information system design is a complex activity which needs conceptual modeling to represent office data and activities in a formal way. The problem of retrieving information from conceptual schemas of office systems is addressed, to support the designer in the different phases of office information system design. A semantic query language is proposed, based on a semantic representation of the TODOS Conceptual Model for office design .

An implementation of GEM

This paper presents a simple approach for extending the relational system INGRES into one supporting a semantic data model it describe a DBMS consisting of (i) a user-friendly front-end, supporting the GEM semantic data model and query language under the UNIX time-sharing system, and (ii) a dedicated back-end processor providing efficient support for database transactions, concurrency control and recovery GEM extends the relational model to support the notions of entities with surrogates, the relationships of aggregation and generalization, null values and set-valued attributes, and provides simple extensions of QUEL to handle these new constructs in this proposed implementation of GEM, the relational database processor IDM 500 by Britton-Lee is used as the back-end machine