Exam 8: Structuring System Data Requirements

An identifier is a candidate key that has been selected to be used as the unique characteristic for an entity type.

The ________ is a logical grouping of objects that have the same (or similar)attributes,relationships,and behaviors; also called class.

The ________ of an object encompasses its properties (attributes and relationships)and the values of those properties.

A part-of relationship in which parts belong to only one whole object,and the parts live and die with the whole object is called ________.

The fact that the same operation may apply to two or more classes in different ways is known as ________.

Describe conceptual data modeling.How is it used? Describe the process.

Define domains for the following attributes: Account number.

The ________ is the technique of hiding the internal implementation details of an object from its external view.

A state is a named property or characteristic of an entity that is of interest to the organization.

A(n)________ class is a class that has no direct instances but whose descendants may have direct instances.

The process of conceptual data modeling begins with developing a conceptual data model for the system being replaced,if a system already exists.This is essential for planning the conversion of the current files or database into the database of the new system.

Which business rule specifies rules concerning the relationships between entity types?

A class that can have direct instances (e.g.,Outpatient or Resident Patient)is called a(n)________ class.

A ________ is an entity type that is meaningful to the organization and that shares common attributes or relationships distinct from other sub-groupings.

A domain is the set of all data types and ranges of values that ________ may assume.

Which business rule specifies constraints on valid values for attributes?

A(n)________ has a well-defined role in the application domain,and it has state (data),behavior,and identity characteristics.

A supertype is a generic entity type that has a relationship with one or more subtypes.

Similar attributes of different entity types should use ________ but distinguishing names.

Event entity types should be named for the result of the event,not the activity or process of the event.