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Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
A
Weak entity
B
Strong entity
C
ID-dependent entity
D
ID-independent entity
Correct Answer:
ID-dependent entity
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
A
True
B
False
Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
A
Weak entity
B
Strong entity
C
ID-dependent entity
D
ID- independent entity
Assume that your version of C++ can recognize only the first 8 characters of an identifier name, through identifier names may be arbitrarily long. Which of the following identifier names is not distinct:
A
list, list2
B
address, Address
C
identifier_l, identifier_2
D
answer, ANSWER
E
None of the above
There are similarities between the instructor entity set and the secretary entity set in the sense that they have several attributes that are conceptually the same across the two entity sets: namely, the identifier, name, and salary attributes. This process is called
A
Commonality
B
Specialization
C
Generalization
D
Similarity
An entity in A is associated with at most one entity in B, and an entity in B is associated with at most one entity in A.This is called as
A
One-to-many
B
One-to-one
C
Many-to-many
D
Many-to-one
"Which of the following two statements are correct regarding Chinese policy of "Theory of Palm and five fingers"?
1. It includes Bhutan and Nepal
2. It includes Arunachal Pradesh, Sikkim and Laddakh
3. It includes Mizoram and Manipur
4. It includes Tripura and Nagaland
Choose the correct answer from the options given below."
A
1 and 3
B
1 and 4
C
1 and 2
D
2 and 3
Which of the following two statements are correct regarding Chinese policy of "Theory of Palm and five fingers"?
1. It includes Bhutan and Nepal
3. It includes Mizoram and Manipur
4. It includes Tripura and Nagaland
Choose the correct answer.
A
a and c
B
a and d
C
a and b
D
b and c
Which of the following two statements are correct regarding Chinese policy of "Theory of Palm and five fingers"?
1. It includes Bhutan and Nepal
2. It includes Arunachal Pradesh, Sikkim and Laddakh
3. It includes Mizoram and Manipur
4. It includes Tripura and Nagaland
Choose the correct answer from the options given below.
A
1 and 3
B
1 and 4
C
1 and 2
D
2 and 3
Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
A
Supertype entity
B
Subtype entity
C
Archetype entity
D
Instance entity
A subtype entity is a special case of another entity called a supertype entity.
A
True
B
False