Résumé: Data definition, manipulation, protection, and independence, and System performance are important factors when studying and evaluating data-base management systems to be used in shared data-base environments. The relational and CODASYL Data Base Task Group approaches, which have been widely discussed and debated, are compared and contrasted from these points of view. The paper concludes with the observation that since data-base management systems are to serve the needs of widely diverse communities of users, no single approach to data-base management seems either desirable or likely to emerge as dominant in the near future.

Langue: Anglais
Thème Informatique

Mots clés:
Performance
Data structures (Computer science)
data base
data-base management
data definition
data manipulation
data modeling
data independence
hierarchical data bases
network data bases