COMPUTER PROGRAMMING FUNDAMENTALS
WHAT IS PROGRAMMING
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The movement of data between processes.
|
|
|
The movement of data into and information out of a system.
|
|
|
The order in which processes occur in a system.
|
|
|
The nature of data structures used by processes within the system.
|
Detailed explanation-1: -A data flow diagram (DFD) maps out the flow of information for any process or system. It uses defined symbols like rectangles, circles and arrows, plus short text labels, to show data inputs, outputs, storage points and the routes between each destination.
Detailed explanation-2: -Context diagrams show the interactions between a system and other actors (external factors) with which the system is designed to interface. System context diagrams can be helpful in understanding the context which the system will be part of.
Detailed explanation-3: -A context diagram, sometimes called a level 0 data-flow diagram, is drawn in order to define and clarify the boundaries of the software system. It identifies the flows of information between the system and external entities. The entire software system is shown as a single process.
Detailed explanation-4: -A Data Flow Diagram (DFD) is a graphical representation of the “flow” of data through an information system (as shown on the DFD flow chart Figure 5), modeling its process aspects. Often it is a preliminary step used to create an overview of the system that can later be elaborated.
Detailed explanation-5: -Logical data flow diagram (DFD): Graphical representation of a system showing the system’s processes (as bubbles), data stores, and the flows of data into and out of the processes and data stores.