Object Oriented Analysis

Question 1

Analysis

Answer 1

The process of understanding a problem

Question 2

Object-Oriented Analysis

Answer 2

It is a requirements analysis technique
Models real-world objects based on their descriptions
and produces an object analysis model (

Question 3

Why are objects a better starting point than functions in OOA?

Answer 3

During maintenance, functions change more frequently than objects

Question 4

What do structured analysis and design techniques focus on?

Answer 4

They are Functionally oriented, which is they focus on the computations that need to be made

Question 5

What does object oriented analysis and design techniques focus on?

Answer 5

They are primarily concerned with data objects

Question 6

OOA Class Object Mapping

Answer 6

Takes a textual representation like a requirements document and cuts it up into Identifying words and maps them to descriptions of classes and their relationships

Nouns => Classes
Actions => Operations
Adjectives => Attributes
Stative Verbs => Relationships

Question 7

Steps in OOA?

Answer 7

1. Candidate object classes are indicated by the occurrence of nouns in natural language description of the system
2. Nouns are organize into related groups (Classes)
3. Adjectives are modeled as Attributes
4. Action Verbs are modeled as operations and assigned to appropriate provider class
5. Other stative verbs are indicative of relationships

Question 8

OOA Technique

Answer 8

• Obtain/prepare textual description of the problem
• –> Underline all nouns
• Organize nouns into groups to become candidate classes
• –> Underline all adjectives
• Assign adjectives as attributes of candidate classes
• –> Underline verbs, differentiating action from stative
• Assign action verbs as operations of classes
• –> Assign Stative verbs as attributes of classes or relationships.

Question 9

Stemming

Answer 9

Removing the prefixes and suffixes, and preserves the root word as a candidate class name.

Question 10

Class Definition

Answer 10

A description of a group of related objects (aka instances)

Question 11

Groups

Answer 11

a collection of objects that have some relation.

groups form candidate classes

Question 12

Operation

Answer 12

Computational service provided by an object.

Suggested by looking for action verbs.

Question 13

Linking Verbs

Answer 13

Verbs typically associated with the word ‘is’

Question 14

Stative Verbs

Answer 14

Indicative of a relationship among objects

Question 15

Relationships

Answer 15

Indicated by lines connecting classes adorned in one of three ways

Question 16

Ways Relationships are Displayed

Answer 16

1. Generalization
   Open Triangle
2. Aggregation
   Open Diamond
3. Association
   No Adornment

Question 17

Generalizations

Answer 17

Instance of one (child) are a kind of instance of the other class.
(inheritance)

Key Words: is a, kind of, type of

Question 18

Aggregations

Answer 18

Collections of some sort

Key Words: consists of, part of, contains, has, incorporates, belongs to

Question 19

Association

Answer 19

Stative verbs denote a state of being, and often indicate associations

Question 20

Stative Verbs

Answer 20

Denote a state of being.

I go to school at KSU.
Counter counts the leaves.
The count is zero.