Query Optimization Strategies in Distributed Databases

Preeti Tewari


The query optimization problem in
large-scale distributed databases is NP
nature and difficult to solve. The complexity of the
optimizer increases as the number of relations and
number of joins in a query increases.
being carried out to find an appropriate algorithm
to seek an optimal solution especially when the size
of the database increases. Various Optimization
Strategies have been reviewed in this paper and the
studies show that the performance of distributed
query optimization is improved when Ant Colony
Optimization Algorithm is integrated with other
optimization algorithms.


Query Execution Plan, Distributed Database, Ant Colony Algorithm, Search Strategies

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