TAW_12_1 Chapter 1, introduction to OO programming

Question 1

As it relates to functions, how are BAPIs and BORs implemented in the calling program?

Answer 1

BAPIs are Function Modules, BORs are function groups

Question 2

What does polymorphism support?

Answer 2

Generic programming

Question 3

What three UML diagram types are useful when designing classes?

Answer 3

Class diagrams
Behavior diagrams
Component diagrams

Question 4

What is the difference between a Component diagram and a behavior diagram

Answer 4

Behavior is the sequence

Component is is the organization and dependencies

Question 5

Arrows must be used between classes?

Answer 5

Yes, this shows the navigation. but later does not seem required

Question 6

What describes an association class in UML

Answer 6

It is an association of two or more other classes represented by a dotted line. It has the shared attributes in its description

Question 7

What are aggregates?

Answer 7

an empty rhombus indicating that the Child can exist independently of the parent. In the example, Wheels can exist independently of a vehicle

Question 8

What is a composition?

Answer 8

A filled rhombus that indicates that that the child ceases to exist without the parent. In the example the rental cannot exist without a booking. This will always have at least 1 for cardinality

Question 9

What is an object diagram?

Answer 9

A snap shot taken during execution of class relationships

Question 10

What are sequence diagrams?

Answer 10

Describes the sequence and relationships of objects