Exam 4 Study Guide

Front 1

base class

Back 1

a class that is used as a basis for inheritance

Front 2

derived class

Back 2

an extended class

Front 3

signature

Back 3

a method's name and parameter list

Front 4

class diagram

Back 4

a tool for describing a class that consists of a rectangle divided into three sections that show the name, data, and methods of a class

Front 5

public access

Back 5

a privilege of class members in which other programs and methods may use the specified data or methods within a class.

Front 6

class diagram indicates public access

Back 6

+ (plus sign)

Front 7

polymorphism

Back 7

An object-oriented feature that allows you to use reasonable, easyto-remember names for methods and concentrate on their purpose rather than on memorizing different method names

Front 8

fragile

Back 8

Classes that depend on field names from parent classes are said to be ________ because they are prone to errors

Front 9

reliable

Back 9

Classes that depend on field names from parent classes are said to be _________

Front 10

superclass

Back 10

Classes that depend on field names from parent classes are said to be _________

Front 11

non default constructor

Back 11

a constructor that requires at least one argument

Front 12

parameterized constructor

Back 12

a constructor that requires at least one argument

Front 13

throw an exception

Back 13

to pass an exception out of a block where it occurs, usually to a block that can handle it

Front 14

exception

Back 14

the generic term used for an error in object–oriented languages

Front 15

IDE

Back 15

In several languages, the visual development environment is knownby what acronym?

Front 16

object

Back 16

In some programming languages, such as C#, Visual Basic, andJava, every class you create is a child of one ultimate base class, oftencalled the _______ class

Front 17

text box

Back 17

A rectangular area into which the user can type text.

Front 18

button

Back 18

A rectangular object you can click; when you do, its appearanceusually changes to look pressed.

Front 19

pixel

Back 19

One of the tiny dots of light that form a grid on your screen.

Front 20

wireframe

Back 20

a picture or sketch of a screen the user will see when running a program

Front 21

check box

Back 21

A label placed beside a small square.

Front 22

object dictionary

Back 22

a list of the objects used in a program, including which screens they are used on and whether any code, or script, is associated with them

Front 23

interactivity diagram

Back 23

A diagram that shows the relationship between screens in aninteractive GUI program.

Front 24

frames

Back 24

A sequence of cells drawn by cartoonists creating animated films

Front 25

black boxes

Back 25

GUI components are excellent examples of the best principles ofobject-oriented programming; they represent objects with attributes andmethods that operate like what?

Front 26

real estate

Back 26

GUI programmers sometimes refer to screen space as what?

Front 27

scripts

Back 27

In object-oriented languages, the procedural modules that dependon user-initiated events are often called what?

Front 28

fork

Back 28

a branch in which all paths are followed simultaneously

Front 29

state machine

Back 29

A diagram that shows the different statuses of a class or object at different points in time.

Front 30

join

Back 30

Something that reunites the flow of control after a fork.

Front 31

time signal

Back 31

A signal that indicates that a specific amount of time should pass before an action starts.

Front 32

communication diagram

Back 32

A diagram that emphasizes the organization of objects that participate in a system.

Front 33

whole-part relationship

Back 33

A relationship that describes an association in which one or more classes make up the parts of a larger whole class.

Front 34

association relationship

Back 34

A relationship that describes the connection or link between objects.

Front 35

extend variation

Back 35

A use case variation that shows functions beyond those found in a base case.

Front 36

scenario

Back 36

Each variation in the sequence of actions required in a use case is a what?

Front 37

lightning bolts

Back 37

In a UML diagram, any exceptions that might be thrown are listed next to shapes that look like what?

Front 38

objects

Back 38

The horizontal axis of a sequence diagram represents what?

Front 39

time

Back 39

The vertical axis of a sequence diagram represents what?

Front 40

foreign key

Back 40

A column that is not a key in a table, but it contains an attribute that is a key in a related table.

Front 41

integrity

Back 41

A database has what when it follows a set of rules that makes the data accurate and consistent?

Front 42

compound key

Back 42

A key that is constructed from multiple columns is called a what?

Front 43

wildcard

Back 43

a symbol that means any or all

Front 44

unnormalized

Back 44

A table that contains repeating groups is what?

Front 45

transitive dependency

Back 45

What occurs when the value of a nonkey attribute determines, or predicts, the value of another nonkey attribute?

Front 46

lock

Back 46

What is a mechanism that prevents changes to a database for a period of time?

Front 47

repeating group

Back 47

What is a subset of rows in a database table that all depend on the same key?

Front 48

one–to–many relationships

Back 48

What is the most common type of relationship between tables?

Front 49

alternate

Back 49

After you choose a primary key from among candidate keys, the remaining candidate keys become what kind of keys?

Front 50

anomaly

Back 50

What is an irregularity in a database design that causes problems and inconveniences?

Front 51

join operation

Back 51

Connecting two tables based on the values in a common column is called what?

Front 52

encryption

Back 52

What is the process of coding data into a format that human beings cannot read?

Front 53

scripts

Back 53

In object-oriented languages, the procedural modules that depend on user-initiated events are often called what?