International Journal of Application or Innovation in Engineering & Management (IJAIEM)
Query optimization is a complex task. It is search for best solution from among the semantically equivalent solutions that can be generated for any given query. It therefore seems logical to consider query optimization in term of search algorithm. Now-a-days the authors have various search algorithms' that have been applied to find an optimal or best fitted for query execution. As query getting more and more complex the search complicity is even increasing. Available query optimization techniques are inadequate to support some of emerging database application.