Related Questions

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
A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).
A True
B False
All attribute declarations begin with the keyword ____________ followed by the element name, attribute name, attribute type, and default data information.
A XML
B SGML
C ATTLIST
D HTML
A strong entity is an entity whose existence depends on some other entity type.
A True
B False
Indicate which of the following statements about the advantages of the phase discriminator over the slope detector is false:
A Much easier alignment
B Better linearity
C Greater limiting
D Fewer tuned circuits
A subtype discriminator is which of the following?
A An attribute of the supertype whose values determine the subtype
B An attribute of the subtype whose values determine the supertype
C An attribute of the supertype whose values determine the supertype
D An attribute of the subtype whose values determine the subtype
Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.
A True
B False
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
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
In which of the following is a single-entity instance of one type related to many entity instances of another type?
A One-to-One Relationship
B One-to-Many Relationship
C Many-to-Many Relationship
D Composite Relationship

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