Name
Abstract | ||
|---|---|---|
When decomposing database schemas, it is desirable that a decomposition is lossless and dependency preserving. A well-known and frequently used result for the relational model states that a functional dependency preserving decomposition is lossless if and only if it contains a key. We will show that this result does not always hold when domains are allowed to be finite, but provide conditions under which it can be preserved. We then extend our work to a complex-valued data model based on record, list, set and multiset constructor, where finite domains occur naturally for subattributes, even if the domains of flat attributes are infinite. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1007/978-3-540-77684-0_22 | FoIKS |
Keywords | Field | DocType |
finite domain,functional dependency,complex-valued data model,relational model state,multiset constructor,complex-valued databases,flat attribute,lossless decomposition,decomposing database schema,relational model,data model | Data mining,Relational database,Computer science,Multiset,Database schema,Theoretical computer science,Functional dependency,If and only if,Relational model,Data model,Database,Lossless compression | Conference |
Volume | ISSN | ISBN |
4932 | 0302-9743 | 3-540-77683-4 |
Citations | PageRank | References |
0 | 0.34 | 15 |
Authors | ||
2 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Henning Koehler | 1 | 167 | 16.06 |
| Sebastian Link | 2 | 307 | 19.17 |