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DBMS Estimating Query Cost MCQs
The cost of an evaluation plan for a query is based on several factors, including:
2. The cost of an evaluation plan for a query is based on several factors, including:
- Accesses to the disk
- A CPU's time spent executing a query
- In distributed and parallel databases, communication costs are high.
- All of the above
Answer: D) All of the above
Explanation:
The cost of an evaluation plan for a query is based on several factors, including:
- Accesses to the disk
- A CPU's time spent executing a query
- In distributed and parallel databases, communication costs are high.