Which term describes the rejoining of relations that have been decomposed?
Consider the Stu_Act and Act_Fee tables shown in the exhibit. Which relational algebraic
operation would yield the Activity Relation table in the exhibit?
Consider the entity-relationship (ER) diagram shown in the exhibit. Which type of relationship
between the two entities is shown?
Consider the following relation definition:
STUDENT(
Student_Number: integer NOT NULL
Name: variable length character string length 20 NOT NULL)
Primary Key Student_Number
HOUSING(
Housing_ID: integer NOT NULL
Student_Number: integer NOT NULL
Building: variable length character string length 25 NOT NULL)
Primary Key Housing_ID
Foreign Key Student_Number References
STUDENT(Student_Number)
ON DELETE NO CHECK
ON UPDATE
Which integrity constraint is violated in this relation definition?
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