SQL for DBASE IV: A User's Tutorial
The Structure of the Relational Database Model
MCSE TESTPREP. SQL Server 6.5 Administration, édition en anglais
Rechnergestützte Informationssysteme
Written for Business Professionals Who Want to Design Customized Programs with dBASE II Software; Explores Installation, Organization, Records & Databases as well as System Design, Structured Programming & Other Advanced Topics