Query Processing and Optimization
Query Processing and Optimization
Query Cost Estimation
- Query Processing can be understood as the activities involved in retrieving data from the d...}
Query Processing and Optimization
Query Operations
- In select operation, file scan search algorithms that locate and retrieve records that fulf...}
Query Processing and Optimization
Evaluation of Expressions
- The algorithms that are shown so far pertains to individual relational algebra operations....}
Query Processing and Optimization
Query Optimization
- We must consider the interaction of evaluation technique when choosing evaluation plans. If...}
Query Processing and Optimization
Query Decomposition
- Query decomposition transforms an SQL (relational calculus) query into relational algebra q...}
Query Processing and Optimization
Performance Tuning
- The main goal of performance tuning is to minimize the response time of the given queries a...}