I. True/False (9 pts-3 pts each) Data integrity means the validity and consistency of stored data. It is usually expressed in terms of constrains, and the DBMS are to enforce them. (True, False 1. DML allows the DBA or user to describe and name entities, attributes, and relationships required for the application. (True, False) 2. 3. In a Relation, each tuple is distinet so there are no duplicate tuples. (True, False) II. Please fill in the blank with the right word from word bank. (12 pts-4 pts each) key uniquely identify that tuple and also In each tuple of table R, values of no proper subset of this key has the uniqueness property. 4. 5. refers to the immunity of the conceptual schemas to changes in the internal schema. The of a relation is the number of attributes it contains. Logical data independence, Physical data independence, Cardinality, Degree, Super, Candidate, Primary, Foreign, Concurrency control service, Integrity service