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Please use this identifier to cite or link to this item:
http://hdl.handle.net/2451/14561
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| Title: | COMMON SUBEXPRESSION ISOLATION IN MULTIPLE QUERY OPTIMIZATION |
| Authors: | Jarke, Matthias |
| Issue Date: | Jan-1984 |
| Publisher: | Stern School of Business, New York University |
| Series/Report no.: | IS-84-46 |
| Abstract: | The simultaneous optimization of multiple queries submitted to a
database system may lead to substantial savings over the current
approach of optimizing each query separately. Isolating common
subexpressions in multiple queries and treating their execution as a
sharable resource are important prerequisites. This chapter presents
techniques for recognizing, supporting, and exploiting common
subexpressions in record-oriented, relational algebra, domain relational
calculus, and tuple relational calculus query representations. It also
investigates preconditions that transaction management mechanisms must
satisfy to make multiple query optimization effective. |
| URI: | http://hdl.handle.net/2451/14561 |
| Appears in Collections: | IOMS: Information Systems Working Papers
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