1. Which is not a component of a relational database?
2. Fifth Normal form is concerned with
3. Functional Dependencies are the types of constraints that are based on______.
4. Which is a unary operation:
5. A _____ indicates an absent value that may exist but be unknown or that may not exist at all.
6. Using the ______ clause retains only one copy of such identical tuples.
7. The primary key must be
8. The normal form which satisfies multivalued dependencies and which is in BCNF is
9. Representations such as the in the dept year relation, with one column for each value of an attribute, are called _______; they are widely used in spreadsheets and reports and in data analysis tools.
10. The logical data structure with a one-to-many relationship is :