Chapter 3 - System Documentation Flashcards
Documentation
Narratives, flowcharts, diagrams, and other written materials that explain how a system works
Narrative description
A written step-by-step explanation of system components and interactions.
Business process diagram (BPD)
A visual way to describe the different steps or activities in a business process.
Flowchart
A pictorial, analytical technique used to describe some aspect of an information system in a clear, concise, and logical manner.
Document flowchart
Illustrates the flow of documents and data among areas of responsibility within an organization.
System flowchart
Depicts the relationships among system input, processing, storage, and output.
Program flowchart
Illustrates the sequence of logical operations performed by a computer in executing a program.
Data flow diagram (DFD)
Graphically describes the flow of data within an organization, including data sources/destinations, data flows, transformation processes and data storage.
Data source
An entity that sends data that the system uses.
Data destination
An entity that receives data that the system produces.
Data flow
The movement of data among processes, stores, sources, and destinations.
Process
Represents the transformation of data; can be an action or decision.
Data store
A repository of data.
Context diagram
The highest-level DFD that provides a summary-level view of a system. It showcases the data-processing systems, its inputs and outputs and their sources and destinations.v
Internal Control Flowchart
Used to describe, analyze, and evaluate internal controls, including identifying system strengths, weaknesses and inefficiencies.