Related Questions

When mapping a many-to-many unary relationship into a relation which of the following is true?
A One relation is created.
B Two relations are created.
C Three relations are created.
D Four relations are created.
When mapping a ternary relationship with an associative entity into a relation which of the following is true?
A One relation is created.
B Two relations are created.
C Three relations are created.
D Four relations are created.
When mapping a multivalued attribute into a relation which of the following is true?
A One relation is created.
B Two relations are created.
C Three relations are created.
D Four relations are created.
When mapping a regular entity into a relation which of the following is true?
A One relation is created.
B Two relations are created.
C Three relations are created.
D Four relations are created.
When mapping a supertype/subtype relationship which of the following is true?
A The supertype primary key is assigned to each subtype.
B The subtype primary key is assigned to each supertype.
C There is no link between the supertype\/subtype entities.
D There is no primary key\/foreign key relationship between a supertype\/subtype.
Which constraint requires that the binary relationship indicate all combinations that must appear in the ternary relationship?
A MUST COVER
B MUST NOT
C Both of the above
D None of the above is correct
A binary adder is a logic circuit that can add _____ binary numbers at a time.
A Hundreds
B Thousands
C One
D Two
E None of the above
If a denormalization situation exists with a one-to-one binary relationship, which of the following is true?
A All fields are stored in one relation.
B All fields are stored in two relations.
C All fields are stored in three relations.
D All fields are stored in four relations.
If a denormalization situation exists with a many-to-many or associative binary relationship, which of the following is true?
A All fields are stored in one relation.
B All fields are stored in two relations.
C All fields are stored in three relations.
D All fields are stored in four relations.
Which of the following is concerned with the description and mapping of the main features of the universe?
A Cosmography
B Cosmology
C Geomorphology
D None of these

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