CHECKPOINTQUESTION:An essential component of modern relational database management systems is the query optimizer. Explain what the query optimizer is, and describe the decision making process the query optimizer uses in order to automatically generate efficient query execution. Based on your explanation, it should be clear to you that the query optimizer can only work with the tools that you, the database architect, provide. For example, the query optimizer cannot make use of an index that would dramatically speed query results, if you have not created the index. Nor can the query optimizer automatically inform you of this serious omission. However, there are other tools, such as the EXPLAIN, ANALYZE, and OPTIMIZE commands which will provide the information you need in order to detect and address the need for indexes, objects, or modifications in the data model which can dramatically improve DBMS performance.2. Start/Connect to MySQL.3. If you have modified or deleted the schema and data model used for Lab