1. | Which of the following is not a level of data abstraction? |
a. | Physical Level |
b. | Critical Level |
c. | Logical Level |
d. | View Level |
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Answer: (b).Critical Level
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2. | Which of the following is not an Schema? |
a. | Database Schema |
b. | Physical Schema |
c. | Critical Schema |
d. | Logical Schema |
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Answer: (c).Critical Schema
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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 |
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Answer: (d).All of the above
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4. | Logical design of database is called |
a. | Database Instance |
b. | Database Snapshot |
c. | Database Schema |
d. | All of the above |
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Answer: (c).Database Schema
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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 |
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Answer: (b).Database Instance
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6. | Which of the following is the structure of the Database? |
a. | Table |
b. | Schema |
c. | Relation |
d. | None of these |
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Answer: (b).Schema
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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 |
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Answer: (b).User View
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8. | _____________ is a classical approach to database design? |
a. | Left – Right approach |
b. | Right – Left approach |
c. | Top – Down approach |
d. | Bottom – Up approach |
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Answer: (c).Top – Down approach
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9. | Which of the following is the oldest database model? |
a. | Relational |
b. | Hierarchical |
c. | Physical |
d. | Network |
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Answer: (d).Network
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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) |
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Answer: (b).Maximum cardinality
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