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1 2 - A relation that contains no multivalued attributes and has non - key attributes solely dependent on the primary key but contains transitive
A relation that contains no multivalued attributes and has nonkey attributes solely dependent on the primary key but contains transitive dependencies is in which normal form?
a first
b second
c third
d fourth
e none of them
When all multivalued attributes have been removed from a relation, it is said to be in:
a first normal form
b second normal form
c BoyceCodd normal form
d third normal form
e none of them
All of the following are the main goals of normalization except:
a minimize data redundancy
b maximize storage space
c simplify the enforcement of referential integrity
d make it easier to maintain data
e increase manageability
A constraint between two attributes is called an:
a functional relation
b attribute dependency
c functional dependency
d functional relation constraint
e none of them
A candidate key must satisfy all of the following conditions except:
a the key must uniquely identify the row.
b the key must indicate the row's position in the table.
c the key must be nonredundant.
d each nonkey attribute is functionally dependent upon it
e all of them should be satisfied
The attribute on the lefthand side of the arrow in a functional dependency is:
a determinant
b candidate key
c foreign key
d primary key
e none of them
What does the following query return from the database?
select cid from section as S where semester 'Fall' and year and not exists select from section as T where semester 'Spring' and year and Scid Tcid;
a all courses taught in Spring but not in Fall
b all courses taught in both Fall and Spring
c all courses taught in both Fall and Spring
d all courses taught in Fall but not in Spring
e none of them
SQL applies predicates in clause after groups are formed, so aggregate functions may be used.
a group by
b with
c where
d from
e having
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