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Design of Optimization in Object-Oriented Queries
| Content Provider | Semantic Scholar |
|---|---|
| Author | Nikose, M. C. Dhande, Sheetal S. Meghe, P. R. |
| Copyright Year | 2012 |
| Abstract | Query optimization is the process of finding the best or rather a reasonably efficient execution plan, thus by minimizing the time of query evaluation & the cost of evaluation to the level accepted by user. When a query jointly addresses very large and small collections, the iteration caused by query operator is driven by large collection and in each cycle a subquery which depends on an element of small collection is evaluated. The result return by subquery for such each element is same. Moreover, such a subquery is unnecessarily evaluated many times. The underlying idea used here is to rewrites such a query so that the loop is performed on small collection and inside each its cycle a subquery addressing a large collection is evaluated. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.ijcem.org/papers012012/ijcem_012012_07.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
