Boulos J., Ono K.: Cost Estimation of User-Defined Methods in Object-Relational Database Systems. ACM SIGMOD Record, 28(3), 22-28, 1999. Home/Search Document Not in Database Summary Related Articles Check |
This paper is cited in the following contexts:
A Cost Model for Interval Intersection Queries on RI-Trees - Kriegel, Pfeifle, Pötke.. (2002) (1 citation) (Correct)
....interval data into account. Our techniques aim at the collection of statistics, the estimation of selectivity, and the prediction of I O cost. Thereby, the optimizer of the database system is enabled to place the user defined index at its optimal position in the query execution plan. According to [5] and [13] such a cost based approach is preferable to rule based approaches when referencing user defined methods as predicates. The two main design aspects for the above mentioned functions are: Effectiveness. The extensible optimizer uses the selectivity estimation to determine a good join ....
Boulos J., Ono K.: Cost Estimation of User-Defined Methods in Object-Relational Database Systems. ACM SIGMOD Record, 28(3), 22-28, 1999.
Eddies: Continuously Adaptive Query Processing - Avnur, Hellerstein (2000) (66 citations) (Correct)
....it has been handled by all the operators. The eddy adaptively chooses an order to route each tuple through the operators. meric data sets is fairly well understood, and there has been initial work on estimating statistical properties of static sets of data with complex types [Aok99] and methods [BO99] But federated data often comes without any statistical summaries, and complex non alphanumeric data types are now widely in use both in object relational databases and on the web. In these scenarios and even in traditional static relational databases selectivity estimates are often quite ....
J. Boulos and K. Ono. Cost Estimation of User-Defined Methods in Object-Relational Database Systems. SIGMOD Record, 28(3):22--28, September 1999.
Eddies: Continuously Adaptive Query Processing - Avnur, Hellerstein (2000) (66 citations) (Correct)
.... twice the bandwidth of inner tracks [Met97] ffl Data Complexity: Selectivity estimation for static alphanumeric data sets is fairly well understood, and there has been some initial work on estimating statistical properties of static sets of data with complex types [Aok99] and methods [BVO97, BO99] But federated data often comes without any statistical summaries, and complex non alphanumeric data types are now widely in use both in objectrelational databases and on the web. In these scenarios and even in traditional static relational databases selectivity estimates are often quite ....
J. Boulos and K. Ono. Cost Estimation of User-Defined Methods in Object-Relational Database Systems. SIGMOD Record, 28(3):22--28, September 1999.
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