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DEXA
1999
Springer
13 years 12 months ago
1999
Springer
: In an extensible database system, evaluation of a query plan is done in cooperation between a collection of operator implementation functions and a component of the DBMS that we ...
PPOPP
1990
ACM
13 years 11 months ago
1990
ACM
Toprogrammassivelyconcurrent MIMDmachines, programmersneed tools for managingcomplexity. One important tool that has been used in the sequential programmingworld is hierarchies of...
ICSE
2010
IEEE-ACM
14 years 14 days ago
2010
IEEE-ACM
We present views, a new approach to controlling concurrency. Fine-grained locking is often necessary to increase concurrency. Correctly implementing fine-grained locking with tod...
CCS
2007
ACM
14 years 1 months ago
2007
ACM
In this paper, we study the maintenance of role-based access control (RBAC) models in database environments using transitive closure relations. In particular, the algorithms that ...
CVPR
2011
IEEE
12 years 11 months ago
2011
IEEE
Catheter tracking has become more and more important in recent interventional applications. It provides real time guidance for the physicians and can be used as motion compensated...