16 FEBRUARY 2021 CURRENT AFFAIRS QUIZ

Which of the following is not one of the three ways to classify an action assertion?

Condition

Authorization

Integrity Control

Enabler

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Overlapping and disjoint subtypes have different approaches on how the subtype discriminator is applied.

True

False

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Generalization is the process of defining more general entity types from a set of more specialized entity types.

False

True

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A supertype can only have only one subtype.

False

True

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Inheritance is which of the following?

When a subtype entity inherits values of the supertype attribute

When a subtype entity inherits values of another subtype attribute

When a supertype entity inherits values of another supertype attribute

When a supertype entity inherits values of the subtype attribute

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There is cardinality on an EER between the supertype and subtype.

False

True

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Which one of the following symbols is not used in an ERD?

Circle

Diamond

Oval

Rectangle

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Which of the following statements concerning business rules is true?

It may include restrictions.

All of these

It should be complex.

It should not be convertible to computer code.

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A subtype discriminator is which of the following?

An attribute of the supertype whose values determine the subtype

An attribute of the supertype whose values determine the supertype

An attribute of the subtype whose values determine the subtype

An attribute of the subtype whose values determine the supertype

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A subtype entity name should be which of the following?

Concise

A singular noun

All of these

Specific to the organization

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