Abiteboul, Serge. Hull, Richard. Vianu, Victor.
Foundations of Databases : Logical Level - USA Addison-Wesley 1995 - 685
0 201 53771 0
Database Management
681.3.07 ABI
Foundations of Databases : Logical Level - USA Addison-Wesley 1995 - 685
0 201 53771 0
Database Management
681.3.07 ABI