TY  - BOOK
AU  - Thalheim, Bernhard, Libkin, Leonid
TI  - Semantics in databases
SN  - 3540641998
U1  - 005.74 
PY  - 1998///
CY  - New York
PB  - ; Springer
KW  - Databases
KW  - Programming Languages
ER  -