Title of article :
On representation and querying incomplete information in databases with bags
Author/Authors :
Leonid Libkin، نويسنده , , Limsoon Wong، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 1995
Keywords :
Databases: Incomplete information: Query languages , Expressive power
Journal title :
Information Processing Letters
Journal title :
Information Processing Letters