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MCQ

The refinement from an initial entity set into successive levels of entity subgroupings represents a ________ design process in which distinctions are made explicit.

Hierarchy

Bottom-up

Top-down

Radical

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MCQ

What is a relationship called when it is maintained between two entities?

Unary

Binary

Ternary

Quaternary

Discussion

MCQ

In the relational modes, cardinality is termed as:

Number of tuples.

Number of attributes.

Number of tables.

Number of constraints.

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MCQ

Consider the employee work-team example, and assume that certain employees participate in more than one work team. A given employee may therefore appear in more than one of the team entity sets that are lower level entity sets of employee. Thus, the generalization is _____________

Overlapping

Disjointness

Uniqueness

Relational

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MCQ

An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as

One-to-many

One-to-one

Many-to-many

Many-to-one

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MCQ

Database __________ which is the logical design of the database, and the database _______ which is a snapshot of the data in the database at a given instant in time.

Instance, Schema

Relation, Schema

Relation, Domain

Schema, Instance

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Engineering

General

Medical

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category More Database Management System Topics

Miscellaneous or General

Relational Algebra

Database Systems

Data Models

The Relational Database Model

Entity Relationship (ER) Modeling

Advanced Data Modeling

Normalization

Structured Query Language (SQL)

Advanced SQL

Database Design

Transaction and Concurrency

Data Warehouses

Database Administration

Mixed

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Community Discussion

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