TY  - BOOK
AU  - Date,C.J.
TI  - An introduction to database systems
SN  - 0201528789
AV  - QA76.9.D3 D37 1990
PY  - 1990///
CY  - Reading, Mass.
PB  - Addison-Wesley
KW  - Database management
N1  - Includes bibliographical references and index
ER  -