Answer the following statements true (T) or false (F)
1. A many-to-many relationship may be implemented using three tables.
2. Each distinct data entity may be stored on several master database tables.
3. Referential integrity means that all foreign keys in the many table must have a matching record in the parent table.
4. A deletion anomaly occurs when the entire primary key is not known and the database cannot delete a record.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
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Indicate whether the statement is true or false
The class at the highest level in a class diagram
a) is an abstract class. b) points directly to all of its subclasses. c) has definitions for all methods in the class hierarchy. d) is the most general class in the class diagram.