TY  - GEN
AU  - Date, C. J.
TI  - The Database relational model: a retrospective review and analysis 
SN  - 0201612941
AV  - QA76.9 D37 2001
PY  - 2001///
CY  - Reading, Massachusetts
PB  - Addison-Wesley
KW  - Relational databases
N1  - Includes bibliographical references and index
ER  -