TY  - BOOK
AU  - Ullman, Jeffrey D.
TI  - Principles of database systems
SN  - 8175155450
U1  - 005.74 
PY  - 2013///
CY  - New Delhi
PB  - Galgotia
KW  - Computer programming, programs & data
KW  - Database models
KW  - Network model
KW  - Relational query language
N1  - Includes index
ER  -