Texas Womans University

CSCI 3423.50

Quiz 4

1)A dashed line between entities indicates______________________.

2. Recursive relationships occur when an entity has a relationship with                                                      .
3. During the implementation phase of developing a database system, the data model is transformed into a database design.
4. Whether or not an instance of one entity class must participate in a relationship with another entity class is indicated by the                                                                                                   .
5. When developing a database system, the database is constructed during the implementation phase.
6. Which of the following is not a source for user requirements during the requirements analysis stage of developing a database system?
7. It is possible for an entity to have a relationship to itself.
8. Maximum cardinality indicates whether or not an instance of one entity class must be related to at least one instance of another entity class.
9. Explain the ambiguity in the broad definition of a weak entity.