System Analysis Quiz

Must have at least one incoming and one outgoing data flow

• Data Store: Correct

• Data Store: Incorrect

What is the symbol for an entity in a DFD?

• Circle

• Rectangle

• Triangle

What is a Source/Sink in a DFD?

• An internal process

• An external entity

• A data store

What is the purpose of a data dictionary?

• To store data flows

• To document data elements

• To create diagrams

What are the three types of relationships in ERD?

• One-to-one, One-to-many, Many-to-many

• One-to-one, One-to-two, Many-to-many

• One-to-many, Two-to-many, Many-to-many

What does cardinality describe in ERD?

• The number of entities

• The numeric relationship between entities

• The types of relationships

What is a functional primitive in a DFD?

• A process that is not exploded further

• A data flow

• An external entity

What is the first step in drawing an initial ERD?

• List the entities

• Draw the relationships

• Identify the processes

What is the purpose of leveling in DFDs?

• To create a summary

• To draw detailed diagrams

• To maintain consistency

What is a many-to-many relationship?

• One instance of the first entity can relate to many instances of the second entity

• One instance of the second entity can relate to many instances of the first entity

• Both statements are true