Exam 6: Object Modeling

The strongest relationship among objects is called inheritance.

Some objects might have a few attributes;others might have dozens.

A star marks the end of the lifeline.

An object represents a real person,place,event,or transaction.

A _____ graphically documents a use case by showing the classes,the messages,and the timing of the messages.

An object belongs to a group or category called a(n)_____.

Explain a class diagram.Also,explain how a class diagram is like a data flow diagram (DFD).

Just as objects are similar to adjectives,attributes resemble verbs that describe what and how an object does something.

For each use case,a _____ in the form of a table is developed to document the name of the use case,the actor,a description of the use case,and so forth.

A method is an adjective that describes the object's current status.

In a class diagram,each class appears as a(n)_____,with the class name at the top,followed by the class's attributes and methods.

A use case represents the steps in a specific business function or process.

The black box concept is an example of _____,which means that all data and methods are self-contained.

Objects within a class can be grouped into _____,which are more specific categories within a class.

A class can belong to a more general category called a _____.

In a use case,an external entity,called a(n)_____,initiates a use case by requesting the system to perform a function or process.

A major advantage of object-oriented (O-O)designs is that systems analysts can save time and avoid errors by using _____ objects.

What do relationships enable objects to do? What is the strongest kind of relationship? Walk through an example that demonstrates your understanding of the concept.

Using the concept of polymorphism,define messages.

A(n)_____ represents the steps in a specific business function or process.