You are an audit manager conducting a training session for new hires at a large CPA firm. Explain in your own words to these new hires why a working knowledge of SQL is important for employees at your firm. Then provide three examples to these new hires of how SQL can be used on the job.

Examples:

1. Selecting and extracting data matching specified criteria, such as inventory quantities on hand in excess of quantities sold over a specified time period.

2. Deleting records from the database based on established criteria, such as deleting approved vendors who are inactive.