Exam 2: Modeling Data in the Organization

A weak entity type is related to its owner by a(n)________.

A ________ specifies the number of instances of one entity that can be associated with each instance of another entity.

What are some of the guidelines for good data names of objects in general?

An entity-type name should be ________ to the organization.

A ________ may be associated with any data value that changes over time when we need to maintain a history of those data values.

An entity is a person,place,object,event,or concept in the user environment about which the organization wishes to maintain data.

A business rule is a statement that defines or constrains some aspect of the business.

A ________ relationship occurs between two instances of a single entity type.

What are the three different degrees of relationship?

The maximum criminality of a relationship is the maximum number of instances of entity B that may be associated with each instance of entity A.

Data names do not have to be unique.

An entity type name should be all of the following EXCEPT:

A business rule should be internally consistent.

An entity type on which a strong entity is dependent is called a covariant entity.

One of the roles of a database analyst is to identify and understand rules that govern data.

The total quiz points for a student for an entire semester is a(n)________ attribute.

A property or characteristic of an entity is a(n)________.

An entity that associates the instances of one or more entity types and contains attributes specific to the relationships is called a(n):

On what premises are business rules based?

A single occurrence of an entity type is called an entity ________.