Chapter ( 3 )

1. Many documentation tools are available to explain how a system works. Which tool provides a graphical description of the sources and destinations of data as well as data flow within the organization and the processes that transform and store that data?

Data flow diagram

Document flowchart

Program flowchart

System flowchart

A data flow diagram is a tool that provides a graphical description of the sources and destinations of data, as well as the flow of data within the organization and the processes that transform and store that data. It visually represents how data moves through a system, showing the inputs, outputs, and processes involved. This diagram helps in understanding the flow of data and identifying any bottlenecks or inefficiencies in the system. It is commonly used in software development and business analysis to document and analyze the data flow within a system.

Explanation

A data flow diagram is a tool that provides a graphical description of the sources and destinations of data, as well as the flow of data within the organization and the processes that transform and store that data. It visually represents how data moves through a system, showing the inputs, outputs, and processes involved. This diagram helps in understanding the flow of data and identifying any bottlenecks or inefficiencies in the system. It is commonly used in software development and business analysis to document and analyze the data flow within a system.

2. What do the circles on a data flow diagram represent?

Data sources and destinations

Data flows

Data stores

Transformation processes

The circles on a data flow diagram represent transformation processes. These processes are responsible for converting inputs into outputs by performing various operations or calculations on the data. They can include activities such as data manipulation, data validation, data transformation, or data enrichment. The circles visually depict the stages where the data is being transformed or modified within the system.

Explanation

The circles on a data flow diagram represent transformation processes. These processes are responsible for converting inputs into outputs by performing various operations or calculations on the data. They can include activities such as data manipulation, data validation, data transformation, or data enrichment. The circles visually depict the stages where the data is being transformed or modified within the system.

3. What are the four basic elements of a data flow diagram?

Data sources and destinations, in flows, out flows and storage.

Data sources and destinations, data flows, transformation processes and data stores.

Data stores and destinations, transforming processes and data flows.

Data processes, data flows, storage and destinations.

The correct answer is "Data sources and destinations, data flows, transformation processes and data stores." This is because a data flow diagram (DFD) is a visual representation of the flow of data within a system. Data sources and destinations represent where the data comes from and where it goes to. Data flows show the movement of data between different components. Transformation processes represent the actions or operations performed on the data. And data stores are used to store and retrieve data within the system.

Explanation

The correct answer is "Data sources and destinations, data flows, transformation processes and data stores." This is because a data flow diagram (DFD) is a visual representation of the flow of data within a system. Data sources and destinations represent where the data comes from and where it goes to. Data flows show the movement of data between different components. Transformation processes represent the actions or operations performed on the data. And data stores are used to store and retrieve data within the system.

4. Document flowcharts are often called:

Data flow diagrams

Internal control flowcharts

Process flowcharts

Multipurpose flowcharts

Document flowcharts are often referred to as internal control flowcharts because they are used to visually represent the flow of documents within an organization's internal control system. These flowcharts help to identify and analyze the controls in place to ensure the accuracy, completeness, and reliability of documents as they move through various processes and departments.

Explanation

Document flowcharts are often referred to as internal control flowcharts because they are used to visually represent the flow of documents within an organization's internal control system. These flowcharts help to identify and analyze the controls in place to ensure the accuracy, completeness, and reliability of documents as they move through various processes and departments.

5. A flowchart is

An analytical technique used to describe the data flows and sources and destinations and data stores of a system.

An analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner.

A piece of hard plastic used to draw symbols.

A flowchart is an analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner. It is a visual representation that allows for the understanding of how data flows within an organization, including the processes performed on that data and the sources and destinations of the data. This technique helps to analyze and communicate complex systems in a simplified and structured way.

Explanation

A flowchart is an analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner. It is a visual representation that allows for the understanding of how data flows within an organization, including the processes performed on that data and the sources and destinations of the data. This technique helps to analyze and communicate complex systems in a simplified and structured way.