Associating types with domains of relational data bases Michel Lacroix, Alain Pirotte Available in: PDF Published in February 1981 (Vol.11 No.2)
A data abstraction approach to database modelling B. Leavenworth Available in: PDF Published in February 1981 (Vol.11 No.2)
Incompleteness in knowledge bases Hector J. Levesque Available in: PDF Published in February 1981 (Vol.11 No.2)
Axiomatic information modeling Bengt Lundberg, Janis A Bubenko Available in: PDF Published in February 1981 (Vol.11 No.2)
Data models in database management E. F. Codd Available in: PDF Published in February 1981 (Vol.11 No.2)
On the specification of behavioural constraints Flaviu Cristian Available in: PDF Published in February 1981 (Vol.11 No.2)
Constraints: A uniform model for data and control L. Peter Deutsch Available in: PDF Published in February 1981 (Vol.11 No.2)