TY  - BOOK
AU  - Date, C. J. 
TI  - An introduction to database systems
SN  - 0201528789
U1  - 005.74 DAT 
PY  - 1990///-
CY  - Mass.
PB  - Addison-Wesley, Reading,  
KW  - Database management
N1  - Includes index
ER  -