Exam 6: Structuring System Requirements: Process Modeling

A context diagram shows the scope of the organizational system, system boundaries, external entities that interact with the system, and the major information flows between entities and the system.

A level-0 diagram is a data-flow diagram that represents a system's major processes, data flows, and data stores at a high level of detail.

To date, data-flow diagrams have not been useful tools for modeling processes in business process reengineering.

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A join in a data flow means that exactly the same data come from any of two or more different processes, data stores, or sources/sinks to a common location.

A square on a data-flow diagram represents a:

Match each of the following terms with its description. -Graphically representing the functions that capture, manipulate, store, and distribute data between a system and its environment and between components within a system

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -The inputs to a process are different from the outputs of that process.

Which of the following would be considered when diagramming?

Data cannot move directly from a source to a sink.

Match each of the following terms with its description. -Breaking a larger system into smaller subsystems or processes

Match each of the following terms with its description. -The origin and/or destination of data, sometimes referred to as external entities

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A data flow has a verb phrase label.

Assume shipment data are entered into a logbook once shipments are received at the company's warehouse; the logbook is represented on a data-flow diagram as a sink.

On a data-flow diagram, you may:

The decomposition of Process 2.4.3.4 would be shown on a level-4 diagram.

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A data flow to a data store means update.

For each of the following statements, answer "a" if the statement is a true data-flow diagramming rule, and answer "b" if the rule is false. -A data flow is bi-directional between symbols.

A composite data flow on one level can be split into component data flows at the next level, but no new data can be added and all data in the composite must be accounted for in one or more subflows.

A primitive level data-flow diagram is the first deliverable produced during requirements structuring.

The lowest level of decomposition for a data-flow diagram is called the: