TY  - BOOK
AU  - Ullman, Jeffrey D.
TI  - Principles of database systems
U1  - 005.74  2
PY  - 1984///
CY  - New Delhi
PB  - Galgotia Publications Pvt Ltd.
KW  - Introduction to database system concepts
KW  - Physical data organization
KW  - Network model and the DBTG proposal
KW  - Hierarchical model
KW  - Relational query languages
KW  - Query optimization
ER  -