TY  - BOOK
AU  - Ullman, Jeffrey D  & Widom, Jennifer
TI  - A First course in database systems
SN  - 0-13-887647-9
U1  - 001.64 Ull/Wid 
PY  - 1997///
CY  - Prentice-Hall, London
KW  - Computer Science
ER  -