My Systems Analysis Ch.6

The UML uses a set of symbols to represent graphically the ____ within a system.

A gas pump is an example of a black box.

The line from the actor to a use case is called a(n) ____.

The concept that a message gives different meanings to different objects is called ____.

An object's ____ are the tasks or functions the object performs.

A use case description documents (among other things) ____.

When you create a use case diagram, the first step is to identify the system boundary, which is represented by a ____.

All relationships have equal weight; none is stronger than any other.

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

In a state transition diagram, the circle at the right with a hollow border is the initial state.

Your red Mustang is a(n) ____ of the CAR class.

After you identify the objects, classes, and relationships, you are ready to prepare an object relationship diagram that will provide an overview of the system.

____ enable objects to communicate and interact as they perform business functions and transactions required by the system.

An object ____ diagram shows the objects and how they interact to perform business functions and transactions.

The number of ____ needed to describe an object depends on the business requirements of the information system and its users.

If ____ are similar to adjectives that describe the characteristics of an object, objects are similar to nouns.

When you construct a ____, you review the use case and identify the classes that participate in the underlying business process.

When you create an object relationship diagram, it will serve as a guide as you continue to develop additional diagrams and documentation.

In a sequence diagram, a(n) lifeline is identified by a line showing direction that runs between two objects.

A(n) ____ defines specific tasks that an object can perform.

A sequence diagram ____.

A class can belong to a more general category called a(n) subclass.

A major advantage of O-O designs is that systems analysts can save time and avoid errors by using ____ objects.

Objects can have a specific attribute called a(n) ____.

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(n) ____ is a specific member of a class.

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

A(n) method is like a blueprint, or template, for all the objects within a class.

Inheritance enables a ____ to derive one or more of its attributes from a parent.

____ describe what objects need to know about each other, how objects respond to changes in other objects, and the effects of membership in classes, superclasses, and subclasses.

Which of the following is not represented by a symbol in a sequence diagram?

An object has certain ____, like the make, model, and color of a car.

In a use case, an external entity is called a(n) ____.

Which of the following is an attribute of a car?

An object's ____ are the tasks or functions the object performs.

Unlike a DFD, a class diagram is a logical model, which evolves into a physical model and finally becomes a functioning information system.

An object treats data and processes separately.

Sequence diagrams, state transition diagrams, and activity diagrams are dynamic modeling tools that can help a systems analyst understand how objects behave and interact with the system.

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.

Your car performs a(n) ____ called OPERATE WIPERS when you send a message by moving the proper control.

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

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

In a sequence diagram, a(n) lifeline is identified by a line showing direction that runs between two objects

____ enables an object to derive one or more of its attributes from another object.

In a state transition diagram, the states appear as rounded rectangles with the state names inside.

In a sequence diagram, a message is identified by a narrow vertical shape that covers the lifeline.

To create use cases, you start by reviewing the information that you gathered during the requirements modeling phase.

The UML notation ____ identifies a zero or many relation.

____ is a widely used method of visualizing and documenting an information system.

A(n) ____ represents a real person, place, event, or transaction.

System analysts define an object's attributes during the systems design process.

When the outcome of one use case is incorporated by another use case, we say the second use case uses the first case.

As shown in the accompanying figure, objects within a class can be grouped into ____, which are more specific categories within a class.

The UML represents an object as a(n) ____ with the object name at the top, followed by the object's attributes and methods.

A(n) ____ is a group of similar objects.

In a sequence diagram, classes that send or receive messages are shown at the bottom of the diagram.

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

A ____ is a command that tells an object to perform a certain method.

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

After you identify a system's objects, classes, and relationships, you should develop a(n) object relationship diagram that provides an overview of the system.