Database management systems past and present E. H. Sibley Available in: PDF Published in February 1981 (Vol.11 No.2)
A conceptual schema for Knowledge-based systems John F. Sowa Available in: PDF Published in February 1981 (Vol.11 No.2)
Data abstraction, data bases and conceptual modelling (Position Paper) J. W. Thatcher Available in: PDF Published in February 1981 (Vol.11 No.2)
The extension of data abstraction to database management Anthony I. Wasserman Available in: PDF Published in February 1981 (Vol.11 No.2)
Are data types universal modelling concepts for data base systems? Herbert Weber Available in: PDF Published in February 1981 (Vol.11 No.2)
Types, algebras and modeling Stephen N. Zilles Available in: PDF Published in February 1981 (Vol.11 No.2)
Constructive Abstract Data types (CAD) Hartmut H. Wedekind Available in: PDF Published in February 1981 (Vol.11 No.2)
Abstract data types and Data Bases Paolo Paolini Available in: PDF Published in February 1981 (Vol.11 No.2)
Data bases: A logical perspective Raymond Reiter Available in: PDF Published in February 1981 (Vol.11 No.2)
Multiple points of view in modelling programs Charles Rich Available in: PDF Published in February 1981 (Vol.11 No.2)
