Mark on the answer sheet provided the option that best answers each of th questions. Completely fill each bubble using pencil or black ink. 1. A relational schema A) has only one relation B) may have several relations is the same as a functional dependency D) must have at least 3 relations 2. A transaction A) Is related only to bank databases B) Can be divided into smaller pieces C) Must be concurrent D) Must be executed as a unit 3. Isolation means that A) Concurrent transactions must not interact B) The DBMS must be isolated from other networks C) Objects must be isolated from each other D) Related objects must not communicate 4. An index is kept in the DBMS as a A) Schema B) Relatiorn C) Tree D) Foreign Key 5. The following are enforced by the user (application) A) Isolation and Consistency B) Durability and Atomicity C) Isolation and Atomicity D) Consistency and Durability