Databases - Upwork

Question: Which of the following is not an important reason for creating a Data Dictionary?
A
To manage the detail in larger systems

B
To document the features of the system

C
To locate errors and omissions in the system

D
To communicate a common meaning for all system elements

E
To help in reviewing the progress of the project

Note: not sure
1. Report
Question: The document of functional specifications will be used by:
A
The Management

B
The Analysis team

C
The Design team

D
The Construction team

E
The Operators

Note: not sure
1. Report
Question: You are designing a database. Which tool would be useful?
A
Warnier Orr Diagram

B
Gantt Chart

C
Entity Relationship Diagram

D
Structure Chart

E
Data Flow Diagram

Note: not sure
1. Report
Question: Which of the following regarding a DFD is incorrect?
A
It is different from a flowchart

B
It is generated in the Analysis phase

C
It is a graphical representation of the system

D
It shows a sequence of steps

E
It is a tool for Data Flow Analysis

Note: not sure
1. Report
Question: Normalization of data is done to:
A
Simplify retrieval

B
Structure the data

C
Simplify maintenance

D
Structure the data and simplify maintenance

E
Simplify retrieval, structure the data and simplify maintenance

Note: not sure
1. Report
Question: How are processes generally numbered in a DFD?
A
From left to right and top to bottom

B
From left to right and bottom to top

C
From top to bottom and left to right

D
From top to bottom and right to left

E
There is no prescribed numbering method

Note: not sure
1. Report
Question: A person who is in charge of updating an account-holder's account would be depicted in a Data Flow Diagram by:
A
External Entity

B
Will not be shown

C
Data Flow

D
Data Store

E
The work being done (process)

Note: not sure
1. Report
Question: Which phase of the Systems Development is concerned with writing programs?
A
Conception

B
Construction

C
Design

D
Analysis

E
Initiation

Note: not sure
1. Report
Question: Which of the following statements is not true regarding Data Flow Diagrams?
A
They are graphical in nature

B
They represent the working of the system

C
They can be readily converted into a Structure Chart

D
A circle in a DFD represents an entity

E
They are of two types - physical and logical

Note: not sure
1. Report
Question: A self-check digit is useful in detecting:
A
Transcription errors

B
Transposition errors

C
Transcription and transposition errors

D
Random errors

E
Transcription, transposition and random errors

Note: not sure
1. Report

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Question: Which of the following is not an important reason for creating a Data Dictionary?

Question: The document of functional specifications will be used by:

Question: You are designing a database. Which tool would be useful?

Question: Which of the following regarding a DFD is incorrect?

Question: Normalization of data is done to:

Question: How are processes generally numbered in a DFD?

Question: A person who is in charge of updating an account-holder's account would be depicted in a Data Flow Diagram by:

Question: Which phase of the Systems Development is concerned with writing programs?

Question: Which of the following statements is not true regarding Data Flow Diagrams?

Question: A self-check digit is useful in detecting: