The purpose of this paper is to investigate algebraic query optimization on an object algebra, taking into account the difference between identity and equality ...
May 31, 2005 · The focus of the paper is on algebraic manipulation of the object algebra for the purpose of query optimization. Various results governing the ...
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Identity, Equality and Query Optimization. Osborn, S L In Advances in Object-Oriented Database Systems, pages 346–351. Springer, Heidelberg et al., 1988.
Equality propagation optimization - MariaDB Knowledge Base
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Let's look at how Equality Propagation is integrated with the rest of the query optimization process. First, multiple-equalities are built.
Identity equality of objects: Two objects, S1 and S2 are equal if they have the same object (that is, if they have the same OID). · Value equality of objects: ...
Nov 7, 2009 · Identity determines whether two objects share the same memory address. Equality determines if two object contain the same state. If two object ...
Oct 22, 2024 · This paper presents algebraic identities and algebraic query optimization for a parametric model for temporal databases.
We are interested in efficiently accessing data in an object-oriented database. We have developed a query algebra which fully supports object identity and.
Query optimization is the process of choosing the most efficient means of executing a SQL statement. SQL is a nonprocedural language, so the optimizer is free ...
A performance study of query optimization algorithms on a database system supporting procedures ... Identity, equality and query optimization. K. Dittrich (Ed.), ...