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110
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VLDB
1989
ACM
15 years 10 months ago
1989
ACM
We investigatetherole of commutativityin queryprocessing of linear recursion. We give a sufficientconditionfor two linear,function-free,constant-free,andrange-restricted rules to ...
157
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VLDB
1989
ACM
15 years 10 months ago
1989
ACM
: We describe the architecture of a relational databasesystem that is extensible by user-defined data types and operations, including relation operations. The central concept is to...
158
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VLDB
1989
ACM
15 years 10 months ago
1989
ACM
realm of User Interface Management Systems (UIMS) with a built-in knowledgeabout the specifickinds of techniques used by object-oriented databases, we have designeda systemthat al...
152
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VLDB
1989
ACM
15 years 10 months ago
1989
ACM
with a full abstract specification of the data-types involved and a multi-level architecture similar to that of a DBMS. A related question is the kind of model that is most suitabl...
128
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VLDB
1989
ACM
15 years 10 months ago
1989
ACM
Managingtransactionswith real-timerequirements and disk residentdata presentsmany new problems.In thispaperweaddressseveral:How canwe scheduletransactionswith deadlines?How do the...