Exam 6: Object Modeling

Class diagrams evolve into code modules,data objects,and other system components.

In a sequence diagram,a lifeline is identified by a _____ line.

By limiting access to internal processes,an object prevents its internal code from being altered by another object or process.

An object includes data,but not the processes that affect that data.

A method is like a blueprint or template for all the objects within a class.

In a sequence diagram,a _____ represents the time during which an object above it is able to interact with the other objects in the use case.

There are few CASE tools tailored to UML.

An object's _____ are the tasks or functions that the object performs when it receives a command to do so.

A black box wants and needs outside interference.

A(n)_____ is a specific member of a class.

_____ describes how instances of one class relate to instances of another class.

The Unified Modeling Language (UML)symbol for a use case is a(n)_____ with a label that describes the action or event.

In a use case,the _____ is shown as a stick figure with a label that identifies its role.

The same message to two different objects produces the same results.

Although the UML can be used for business process modeling and requirements modeling,it is mainly used to support O-O system analysis and to develop object models.

An object can be viewed as a(n)_____,because a message to the object triggers changes within the object without specifying how the changes must be carried out.

Encapsulation allows objects to be used as modular components anywhere in the system.

After one identifies a system's objects,classes,and relationships,one should develop an object relationship diagram that provides an overview of the system.

A class diagram resembles a horizontal flowchart that shows the actions and events as they occur.

In an object-oriented system,objects can _____ certain attributes from other objects.