1. Select the jobs below that may use SQL in their work (select all that apply). Backend Developer Data Scientist DBA Data Analyst QA Engineer 2. How does a data scientist and DBA differ in how they use SQL? DBAs manage the database for other users. Data scientists don't write complex queries. Data scientists only query the database and don't create tables. DBA's are the only ones who merge datasets together. 3. Which of the following statements are true of Entity Relationship (ER) Diagrams? They identify the Primary keys They are usually a representation of a business process. They only represent entities in the diagram. They usually are represented in a visual format. They speed up your querying time. They show you the relationships between tables