4113 search results - page 82 / 823 » Watermarking Relational Databases |
124
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IDEAS
2009
IEEE
15 years 10 months ago
2009
IEEE
This paper is concerned with a transformation-based approach to update propagation in an extended version of Codd’s relational algebra which allows for defining derived relatio...
137
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DEBU
2008
15 years 3 months ago
2008
The Pathfinder project makes inventive use of relational database technology--originally developed to process data of strictly tabular shape--to construct efficient database-suppo...
101
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EDBT
2006
ACM
16 years 3 months ago
2006
ACM
A database schema should be able to evolve to reflect changes to the universe it represents. In existing systems, user transactions get blocked during complex schema transformation...
159
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ADBIS
2004
Springer
15 years 8 months ago
2004
Springer
The richer data models of object relational databases opens many more options for the logical design of a database schema increasing the complexity of logical database design enorm...
138
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ICDE
1994
IEEE
15 years 7 months ago
1994
IEEE
The relational data model is based on sets of tuples, i.e. it does not allow duplicate tuples in a relation. Many database languages and systems do require multi-set place, the hi...