Er Model And Business Rules MCQs with Explanations

A supertype is an entity type that has a relationship with one or more subtypes. It contains common attributes that are shared across all the subtypes. Subtypes inherit these attributes and may have additional attributes of their own. This structure helps in reducing redundancy and improving clarity in data modeling. Therefore, the statement is True.

All of the above is the correct answer to “An action assertion must include which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Attribute is the correct answer to “An oval represents which of the following in an EER”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

When a subtype entity inherits values of the supertype attribute is the correct answer to “Inheritance is which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Disjoint with total specialization is the correct answer to “When an entity instance must be a member of only one subtype, it is which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Each subtype has only one supertype. is the correct answer to “A supertype/subtype hierarchy is which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Entity is the correct answer to “A rectangle represents which of the following in an EER”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Circle is the correct answer to “Which one of the following symbols is not used in an ERD”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Defining one or more subtypes of the supertype and forming supertype/subtype relationships. is the correct answer to “Specialization is which of the following processes”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

It may include restrictions. is the correct answer to “Which of the following statements concerning business rules is true”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Attributes are assigned at the highest logical level. is the correct answer to “A supertype/subtype hierarchy has which of the following features”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

An attribute of the supertype whose values determine the subtype is the correct answer to “A subtype discriminator is which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Overlap with total specialization is the correct answer to “When an entity instance may be a member of multiple subtypes or it does not have to be a member of a subtype, it is which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

All of the above is the correct answer to “A subtype entity name should be which of the following”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

An instance of a subtype participates in a relationship that is unique to that subtype. is the correct answer to “Use of a supertype/subtype relationship is necessary when which of the following exists”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

Enabler is the correct answer to “Which of the following is not one of the three ways to classify an action assertion”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “Packaged data models are meant to be exactly right straight out of the box.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “An action assertion is a statement that expresses some aspect of the static structure of the organization.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “A supertype can only have only one subtype.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “There is cardinality on an EER between the supertype and subtype.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “A subtype discriminator of the supertype is an attribute whose values determine the target subtype(s).”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “An entity instance of a subtype represents the same entity instance of a supertype.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “An ERD that has had the entities clustered will display more entities.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “Total specialization is represented by double lines between the supertype and subtype on an EER.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “Generalization is the process of defining more general entity types from a set of more specialized entity types.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “It is appropriate to use a supertype/subtype relationship when there are attributes that apply to some of the instances of an entity type.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

False is the correct answer to “If an entity adheres to the disjoint rule, then an entity instance can be a member of more than one entity for a given supertype.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “Action assertions have traditionally been implemented within an application program.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.

True is the correct answer to “An entity cluster is a set of one or more entity types and associated relationships.”. This question is standard in competitive examination syllabi for Er Model And Business Rules.