TY  - BOOK
AU  - Date,C.J.
TI  - An introduction to database systems
T2  - The systems programming series
SN  - 0-201-54329-x
AV  - QA76.9B3 D37 1995
PY  - 1995///
CY  - Reading, massachusetts
PB  - Addison-wesley
KW  - Administración de bases de datos
ER  -