Entity Relationship Diagram (ERD)

Entity Relationship Diagram (ERD)

University

7 Qs

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Entity Relationship Diagram (ERD)

Entity Relationship Diagram (ERD)

Assessment

Quiz

Computers

University

Medium

Created by

CIK FERESA MOHD FOOZY

Used 270+ times

FREE Resource

7 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An entity relationship diagram (ERD)_________.

Is a use-case diagram enhanced graphically to show data and process modeling

Is a high-level CASE diagram of data modeling used in business systems

Is an illustration of external data flows to and from a business systems

Is a picture that shows the information that is created, stored, and used by a business system

Is a graphical display of the processes in a business system

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A data model is a ______________.

The mathematical model of formulas and logic used in a system

The abstract creating of an ideal system transformation

The model that is produced by extreme programming

The expanded, thoroughly balanced and normalized use case for a system

A formal way of representing the data that are used and created by a business system

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

On an ERD _________________:

Processes are listed alphabetically with relationship connections drawn between processes

Data elements are listed alphabetically with a cross listing to the processes that manipulate them

Data elements are described as singular (1:1); plurals (1:N); or didactic (M:N)

Data elements are grouped in a hierarchical structure that is uniquely identified by number

Data elements are listed together and place inside boxes called entities

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An entity ____________.

Is the association between two related processes

Has cardinality (1:1, 1:N, or M:N)

Shows if it can be null or no null

Is a person, place or thing

Is described with a verb phrase

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which would NOT likely be an attribute of an entity called “Student”?

Age

Student identification number

Class room number

Home phone

Gender

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Lines on an ERD diagram indicate____________.

Hierarchies between processes

Relationships among the data

Plurality of data items

Uniqueness of data items

Primary keys

7.

OPEN ENDED QUESTION

30 sec • 1 pt

The 4 major parts of an ERD diagram are___________.

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