[Essay Help]: Explain the phases and function of the query optimizer

In a 500- to 750-word document, address the following:

1. Explain the phases and function of the query optimizer.
2. Identify the tools to edit query optimizer strategies.
3. Explain how performance of a database system is measured.
4. Differentiate between response time and throughput.
5. Explain how the physical design of a database influences performance tuning.
6. Explain three ways queries can be altered to increase database performance.
7. Present specific examples to illustrate how implementing each query alteration could optimize the database.