Loading...
Please wait, while we are loading the content...
Similar Documents
On the expressiveness of implicit provenance in query and update languages (2007)
| Content Provider | CiteSeerX |
|---|---|
| Author | Buneman, Peter Vansummeren, Stijn Cheney, James |
| Description | International Centre for Democratic Transition |
| Abstract | Abstract. Information concerning the origin of data (that is, its provenance) is important in many areas, especially scientific recordkeeping. Currently, provenance information must be maintained explicitly, by added effort of the database maintainer. Since such maintenance is tedious and error-prone, it is desirable to provide support for provenance in the database system itself. In order to provide such support, however, it is important to provide a clear explanation of the behavior and meaning of existing database operations, both queries and updates, with respect to provenance. In this paper we take the view that a query or update implicitly defines a provenance mapping linking components of the output to the originating components in the input. Our key result is that the proposed semantics are expressively complete relative to natural classes of queries that explicitly manipulate provenance. 1 |
| File Format | |
| Publisher Date | 2007-01-01 |
| Access Restriction | Open |
| Subject Keyword | Clear Explanation Database Maintainer Added Effort Database System Database Operation Provenance Information Complete Relative Key Result Implicit Provenance Natural Class Update Language Many Area Provenance Mapping Scientific Recordkeeping |
| Content Type | Text |
| Resource Type | Article |
