39 search results - page 2 / 8 » Logical Database Design with Inclusion Dependencies |
DMDW
2001
13 years 6 months ago
2001
Research on logical design of OLAP cubes has tended to assume that the rollup hierarchy in a cube dimension takes the form of a balanced tree. However, experience from industry in...
PODS
2010
ACM
13 years 5 months ago
2010
ACM
We study functional and multivalued dependencies over SQL tables with NOT NULL constraints. Under a no-information interpretation of null values we develop tools for reasoning. We...
FOIKS
2010
Springer
13 years 8 months ago
2010
Springer
Armstrong databases are a popular tool in example-based database design. An Armstrong database for a given constraint set from a fixed constraint class Z satisfies precisely those ...
FROCOS
2011
Springer
12 years 5 months ago
2011
Springer
Temporal data models have been used to describe how data can evolve in the context of temporal databases. Both the Extended Entity-Relationship (EER) model and the Unified Modelli...
DEXAW
1999
IEEE
13 years 9 months ago
1999
IEEE
Recent efforts in the Conceptual Modelling community have been devoted to properly capturing time-varying information, and several proposals of temporally enhanced Entity-Relation...