TY  - BOOK
AU  - Date, C J.
TI  - Introduction to database systems
SN  - 9814053961
U1  - 005.74  7
PY  - 2000///
CY  - New York
PB  - Addison Wesley
KW  - Database system architecture
KW  - Introduction to relational databases
KW  - Further topics
KW  - Relational algebra
KW  - Relational calculus
ER  -