Quiz-1 - Self-quiz PDF

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1. Data modeling includes several models. Which model of data modeling includes the lowest level of abstractions? Select one: a. Internal model b. External model c. Conceptual model d. Physical model

2. Database systems are used by users, however, users are not considered as a part of a database system. Select one: True False

3. A relational database stores data in the form of relations. Select one: True False

4. A rule that each foreign key value must match a primary key value in the other relation is called as? Select one: a. Referential integrity constraint b. Entity integrity constraint c. Tuple constraint d. Semantic integrity constraint

5. In the evolution of database management systems, what does optimization refer to? Select one: a. High Availability b. Security c. Performance d. Scalability

6. OpenOffice Base is an example of a database. Select one: True

False

7. Which of the following is not a problem associated with storing data in a file? Select one: a. Inconsistency occurs when a data item is used multiple times b. Inability to store partial data c. Duplication of data items d. A large amount of disk space is required

8. What does “a named column of a relation” refer to? Select one: a. Attribute b. Domain c. Tuple d. Relation...