Data Models set 1

Que: 1. Which of the following is not a level of data abstraction?
a. Physical Level
b. Critical Level
c. Logical Level
d. View Level
Que: 2. Which of the following is not an Schema?
a. Database Schema
b. Physical Schema
c. Critical Schema
d. Logical Schema
Que: 3. Which of the following is a Data Model?
a. Entity-Relationship model
b. Relational data model
c. Object-Based data model
d. All of the above
Que: 4. Logical design of database is called
a. Database Instance
b. Database Snapshot
c. Database Schema
d. All of the above
Que: 5. Snapshot of the dta in the database at a given instant of time is called
a. Database Schema
b. Database Instance
c. Database Snapshot
d. All of the above
Que: 6. Which of the following is the structure of the Database?
a. Table
b. Schema
c. Relation
d. None of these
Que: 7. A logical description of some portion of database that is required by a user to perform task is called as
a. System View
b. User View
c. Logical View
d. Data View
Que: 8. _____________ is a classical approach to database design?
a. Left – Right approach
b. Right – Left approach
c. Top – Down approach
d. Bottom – Up approach
Que: 9. Which of the following is the oldest database model?
a. Relational
b. Hierarchical
c. Physical
d. Network
Que: 10. Which of the following indicates the maximum number of entities that can be involved in a relationship?
a. Minimum cardinality
b. Maximum cardinality
c. ERD
d. Greater Entity Count (GEC)