TY  - BOOK
AU  - Ullman,Jeffrey D.
TI  - Principles of Database Systems / Second Edition
SN  - 716780690
PY  - 1982///
PB  - Computer Science Press
N2  - Descriptions of actual database systems and query languages such as ISBL, QUEL, Query-by-Example, and SEQUEL are also included, making this book ideal for both practicing computer scientists and for database courses.  Introduction to Database System Concepts, Physical Data Organization, The Network Model and the DBTG Proposal, The Hierarchical Model, The Relational Model, Relational Query Languages, Design Theory for Relational Databases, Query Optimization, The Universal Relation as a User Interface, Protecting the Database Against Misuse, Concurrent Operations on the Database, Distributed Database Systems, Bibliography, Index
ER  -