4. Which of the following is FALSE statement about ANSI-SPARC Three-Level Architecture? A. Internal level - to keep information about the actual representation of the entire database B. Conceptual level - to define all database entities, attributes, and relationships C. External level - to describe the segment of the database which is needed for a certain user group D. External level - to reveal the remaining details from the database from the specific user group 5. Given a relation of R(A,B,C) with A is the candidate keys. Which of the following below is the list of superkeys for R? A. A, AB B. A, AB, AC, ABC, BC, BDC C. A, AC, BC, BDC D. A, AB, AC, ABC 6. Which of the following statements is FALSE about the Primary Key? A. One of the Superkey B. One of the Candidate Key C. One of the Relation D. Not Null 1. Which of the following is NOT the types of databases! A. Cloud databases B. NoSQL databases C. Design databases D. Relational databases 2. Several disadvantages of Database approach are listed below, except? A. Complexity B. Cost of conversion C. Sharing of Data D. Cost of DBMS 3. Which of the following is FALSE about the job responsibilities of the database administrator? A. Understanding of relational and dimensional data modeling B. Install and maintain the performance of database servers C. Diagnose and troubleshoot database errors D. Develop processes for optimizing database security