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Information Systems

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Chen, I-Min A.	1
De Castro, Cristina	1
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Markowitz, Victor M.	1
Scalas, Maria Rita	1

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An Overview of the Object Protocol Model (OPM) and the OPM Data Management Tools.

Peer reviewed

Chen, I-Min A.; Markowitz, Victor M. – Information Systems, 1995

Discussion of database management tools for scientific information focuses on the Object Protocol Model (OPM) and data management tools based on OPM. Topics include the need for new constructs for modeling scientific experiments, modeling object structures and experiments in OPM, queries and updates, and developing scientific database applications…

Descriptors: Database Management Systems, Databases, Models, Scientific and Technical Information

Schema Versioning for Multitemporal Relational Databases.

Peer reviewed

De Castro, Cristina; Grandi, Fabio; Scalas, Maria Rita – Information Systems, 1997

Investigates new design options for extended schema versioning support for multitemporal relational databases. Discusses the improved functionalities they may provide. Outlines options and basic motivations for the new design solutions, as well as techniques for the management of proposed schema versioning solutions, includes algorithms and…

Descriptors: Computer Oriented Programs, Computer System Design, Database Design, Database Management Systems