If an input from a source appears on a level-0 diagram, it must: ...

[Engineer]

If an input from a source appears on a level-0 diagram, it must:
 
  A) appear on the context diagram.
  B) be connected to a data flow.
  C) be connected to a sink.
  D) be connected to a data store.
  E) be connected to two entities.

Question 2

An association between the instances of one or more entity types that is of interest to the organization best defines:
 
  A) occurrence.
  B) relationship.
  C) natural connection.
  D) cardinality.
  E) entity link.

[momo1250]

Answer to Question 1

A
Explanation: A) The boundary or scope of a system, and the system's relationship to its environment, is represented by a data-flow diagram called a context diagram beginning with an input on level-0.
CL

Answer to Question 2

B
Explanation: B) The relationship is represented by lines and verbs are used to describe the relationships.
CL