Which of the Following Statements Related to the Construction of Data

question 125

Multiple Choice

Which of the following statements related to the construction of data flow diagrams (DFDs) is false?

• A) The level 0 diagram is the next level down from the context diagram.
• B) If the level 0 diagram has one arrow going into bubble number 1.0 and two arrows leaving bubble number 1.0, then diagram 1.0 will show one arrow entering and two arrows leaving.
• C) Sources and destinations are depicted by parallel horizontal lines, between which the name of the entity is shown.
• D) Arrows represent a pathway for data.

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Definitions:

CustomerNumber

A unique identifier assigned to a customer for identification and record-keeping purposes within a database.

IdentificationNumber

A unique identifier assigned to individuals, items, or entities for the purpose of tracking, identification, or verification.

Properties

Attributes or settings that determine the appearance or behavior of objects and controls in software development.

Relational Database

A type of database that stores data in tables which are related to each other through unique identifiers or key fields, allowing for efficient data retrieval and management.