4113 search results - page 364 / 823 » Watermarking Relational Databases |
288
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GIS
2005
ACM
16 years 7 months ago
2005
ACM
Group nearest neighbor (GNN) queries are a relatively new type of operations in spatial database applications. Different from a traditional kNN query which specifies a single quer...
264
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SIGMOD
2006
ACM
16 years 6 months ago
2006
ACM
We present our prototype system, OMCAT, which optimizes the reevaluation of a set of pending continuous spatio-temporal queries on trajectory data, when some of the trajectories a...
160
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SIGMOD
2004
ACM
16 years 6 months ago
2004
ACM
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
169
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SIGMOD
2002
ACM
16 years 6 months ago
2002
ACM
Applications like multimedia retrieval require efficient support for similarity search on large data collections. Yet, nearest neighbor search is a difficult problem in high dimen...
158
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EDBT
2004
ACM
16 years 6 months ago
2004
ACM
Abstract. With the widespread use of e-business coupled with the public's awareness of data privacy issues and recent database security related legislations, incorporating sec...