Dependency graphs are diagrams that consist of nodes and arcs that show the dependencies of a database.

When building a database from an existing set of tables, we may safely assume that there are no multivalued dependencies in the data we are given.

A

True

B

False

The manager of a radio program is going to feature six vocalists--M,N,P,Q,R and S on her half hour radio show during the course of one week.She will feature one vocalist on the show each day from Monday through Saturday.The manager must schedule the vocalists for the show according to the following conditions: *M must be featured earlier in the week than R. *P must be featured on Tuesday. * Q must be featured on the day immediately before or immediately after the day on which N is featured. If N is to be featured on Thursday, the earliest day on which R can featured is ---

A

Monday

B

Tuesday

C

Wednesday

D

Friday

The manager of a radio program is going to feature six vocalists--M,N,P,Q,R and S on her half hour radio show during the course of one week.She will feature one vocalist on the show each day from Monday through Saturday.The manager must schedule the vocalists for the show according to the following conditions: *M must be featured earlier in the week than R. *P must be featured on Tuesday. * Q must be featured on the day immediately before or immediately after the day on which N is featured. If S is to be featured on Friday,M must be featured on---

A

Monday

B

Tuesday

C

Wednesday

D

Friday

The manager of a radio program is going to feature six vocalists--M,N,P,Q,R and S on her half hour radio show during the course of one week.She will feature one vocalist on the show each day from Monday through Saturday.The manager must schedule the vocalists for the show according to the following conditions: *M must be featured earlier in the week than R. *P must be featured on Tuesday. * Q must be featured on the day immediately before or immediately after the day on which N is featured. If Q is to be featured on Thursday, the latest day on which M can featured is ---

A

Monday

B

Tuesday

C

Wednesday

D

Friday

In an enterprise-class database system, business users interact directly with database applications, which directly access the database data.

A

True

B

False

In an Enterprise-class database system, business users interact directly with database applications that interact with the DBMS, which directly accesses the database data.

A

True

B

False

Waveforms are graphs that show:

A

frequency on the vertical axis and amplitude on the horizontal axis

B

amplitude on the vertical axis and frequency on the horizontal axis

C

amplitude on the vertical axis and the passage of time on the horizontal axis

D

the passage of time on the vertical axis and amplitude on the horizontal axis

E

None of the above

Arches in the form of masonry arcs struck from more than four centres, are called

A

Two curved arches

B

Gothic arches

C

Ogee arches

D

Drop gothic arches

If no multivalued attributes exist and no partial dependencies exist in a relation, then the relation is in what normal form?

A

First normal form

B

Second normal form

C

Third normal form

D

Fourth normal form

Object-oriented code tries to minimize dependencies by moving responsibility for handling tasks away from _______ and toward the objects in the system.

A

server code

B

client code

C

machine code

D

procedural code

Dependency graphs are diagrams that consist of nodes and arcs that show the dependencies of a database.

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