Chapt.2 - Data Models

Chapt.2 - Data Models

University

15 Qs

quiz-placeholder

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Chapt.2 - Data Models

Chapt.2 - Data Models

Assessment

Quiz

Computers

University

Practice Problem

Medium

Created by

Corneille NDJEUMOU

Used 18+ times

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15 questions

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1.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What is data model?

Simple representations of complex real-world data structures

Abstraction of a real-world object or event

Process of creating a specific data model for a determined problem domain

Clearly defined area within the real-world environment, with a well-defined scope and boundaries

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Below are the reasons why the data model is important EXCEPT

Help in visualizing data

Provides a structure for data

Organizes data for various users

Increases the cost of data storage

Are a communication tool

3.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

An implementation-ready data model should contain?

Hint: Please tick more than one answer

A detailed description of the data structure

A set of enforceable rules

A data manipulation methodology

The number of items of the model

4.

MULTIPLE SELECT QUESTION

30 sec • 1 pt

Which are the basic building block(s) for the data model?

Hint: Please tick more than one answer

Entity

Relationship

Cardinality

Constraint

5.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

Written documentation is one of the source of Business Rules

True
False
Not always
Depends on the business

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As a general rule, ___ in a business rule will translate into ___ in the model, and ___ that associates the nouns will translate into a ___ among the entities.

nouns, entities, verb, relationship
verbs, entities, noun, relationship
nouns, verbs, relationship, entities
entities, nouns, relationship, verbs

7.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

It is difficult to represent M:N relationships in this data model.

Hierarchical data model
Network data model
Object-oriented data model

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