Frequently Asked Questions on Advanced Query Optimization
What is Top-K Optimization in DBMS?
In Top-K optimization, only top K tuples are selected for result and rest tuples are discarded. Pipelined query evaluation plans are used for generating the results in sorted order.
What are Multi Query Optimizations?
In Multi Query Optimization, the query optimizer use common subexpression between different queries. It optimizes the query by common subexpression elimination.
What is the importance of Query Optimization?
Query Optimization can increase the performance and efficiency of database. Query Optimization can save computational time and system resources.
Advanced Query Optimization in DBMS
We will learn about advanced query optimization in DBMS. We will understand about components of optimizer and methods of query optimization. We will also understand about automatic tuning optimizers.