1. All of the following terms represent the same concept, except: a. Table b. Entity d. Relation C. Information 2. The process of finding a good strategy for processing a query is called? a. Query optimization b. Query operations c. Query parsing d. None of the above. 3. SHARDING means: a. storing data with encryption c. discarding unused data 4. A DBMS system catalog identifies all of the following, except: a. Attribute names c. Column data value a. Isolation c. Atomicity b. tearing data into bits d. partition data across multiple databases 5. The ACID properties of a Big Data database include (circle all that apply): b. Consistency d. Big Data does not use ACID 6. Common steps in data analytics (circle all that apply)? a. Extracting b. Encrypting c. Transformed d. Loaded 7. Data in warehouses can usually be divided into b. fact tables d. dimension tables. a. raw data tables c. hidden tables b. Attribute data types d. Column indexes 8. All of the following are algorithms to evaluate join, except: a. Nested loop c. Sort-merge 9. All the following are DML commands, except: a. Select c. Create b. Index-nested loop d. B+-tree b. Delete d. Update