L8 - Interface Specification

Question 1

Roundtrip Engineering

Answer 1

Forward Engineering + Reverse Engineering

Question 2

Bag

Answer 2

Elements can appear more than once (5/5/7/3)

Question 3

Object Oriented Contract

Answer 3

describes service of an object in natural language/mathematical notation/Object Constraint Language (OCL)

Question 4

Invariants

Answer 4

Predicate that is always true for all instances of a class

Question 5

Precondition

Answer 5

Condition must be true BEFORE operation is invoked.

Question 6

Access Modifiers

Answer 6

private & public & protected (rule: make always private - information hiding)

Question 7

OCL

Answer 7

Object Constraint Language. Declarative language with no side effects and no control flow

Question 8

Reengineering

Answer 8

Changing software system after it has been reverse engineered

Question 9

Code Smell

Answer 9

Violation of best practices: long method + duplicated code + large class + many parameters + lazy class

Question 10

Postcondition

Answer 10

Condition must be true AFTER operation is invoked.

Question 11

Sequence

Answer 11

Elements are ordered (1/3/5/7)

Question 12

Set

Answer 12

Elements can appear only once (5/1/7/3)