TY  - BOOK
AU  - Date, C.J.
TI  - An introduction to database system
U1  - 005.74 21st ed.
PY  - 1981///
CY  - Delhi
PB  - Narosa Publishing House
KW  - Data structures
KW  - Database
KW  - Logical database
KW  - Relational database
N1  - Content: v.2
ER  -