Block 2 - From analysis to design

Question 1

action

Answer 1

an atomic momentaneous execution changing the model state;

Question 2

activity

Answer 2

a non-atomic durative execution repping a set of actions;

Question 3

aggregate (composite) object

Answer 3

where an object is composed of other objects;

Question 4

analysis class

Answer 4

reps a solution entity but with no SOs;

Question 5

assertion

Answer 5

= {precons, postcons, invariants}

Question 6

association loop invariant

Answer 6

reps relation between two paths around a loop;

Question 7

baseline

Answer 7

a config-version on which further development can take place;

Question 8

Cascade pattern

Answer 8

where objects form a chain of messaging responsibilities;

Question 9

check(ing) in

Answer 9

where an edited config-item is returned to the repository;

Question 10

check(ing) out

Answer 10

where a config-item is removed from the repository for editing;

Question 11

class diagram

Answer 11

a static rep of a domain or SS;

Question 12

class-responsibility-collaboration cards

Answer 12

where a card template is used to identify classes:

• class name = …
• class responsibilities = …
• (other) class collaborations = …

Question 13

compiler

Answer 13

translates a program from one language to another;

Question 14

concept(tual) model

Answer 14

reps the static part of the domain;

Question 15

correctness

Answer 15

where a SS meets its spec.;

Question 16

defect

Answer 16

where a SS doesn’t meet a requirement(s);

Question 17

defensive programming

Answer 17

precons should always be checked;

Question 18

Design by Contract (DbC)

Answer 18

assume precons have been checked;

Question 19

design model

Answer 19

a static rep of a solution with a class diagram including SOs;

Question 20

domain model

Answer 20

an static rep of a domain with a class diagram;

Question 21

dynamic model

Answer 21

models behaviour;

Question 22

dynamic tool

Answer 22

a tool used at run-time;

Question 23

enumeration type

Answer 23

a user-defined symbol alphabet;

Question 24

external event

Answer 24

where a user acts on the SS in some way;

Question 25

final state

Answer 25

a solid circle enclosed in an empty circle with only incoming transitions;

Question 26

Fork pattern

Answer 26

where one object assumes all the messaging responsibilities;

Question 27

formal technical review (FTR)

Answer 27

a critique of a SS with a view to improving it;

Question 28

fragment (UML)

Answer 28

encapsulates behaviour inside a labelled (opt / alt / loop) box;

Question 29

General Responsibility Assignment Software Patterns (GRASP)

Answer 29

guidelines on how to assign responsibilities to components;

Question 30

grammatical parse

Answer 30

identifying noun phrases from a domain description to discern candidate classes;

Question 31

GRASP Creator

Answer 31

provides guidance on which class should be responsible for creating new objects;

Question 32

GRASP Expert

Answer 32

provides guidance on which class should be responsible for initialising and state-changing an object;

Question 33

initial state

Answer 33

a solid circle with only one outgoing transition;

Question 34

interaction diagram

Answer 34

= {sequence diagram, communication diagram}

Question 35

interface

Answer 35

the SOs of a component;

Question 36

self-transition

Answer 36

where a state transitions to itself;

Question 37

Law of Demeter

Answer 37

on receipt of message m(p_1,…,p_n), an object O should only send messages the following objects:

• O itself;
• p_k;
• objects that m() tells O to create;
• objects O holds a reference to;

Question 38

message numbering

Answer 38

shows chronological order of message-sends in a communication diagram;

Question 39

namespace

Answer 39

a collection within which names are unique;

Question 40

navigability

Answer 40

where 1+ associations / links can be hopped in order to reach an object(s);

Question 41

non-deterministic

Answer 41

where 1+ outcomes is possible;

Question 42

Object Constraint Language (OCL)

Answer 42

[UML + logic + sets] to rep invariants;

Question 43

object diagram

Answer 43

an instance of a class diagram at time t;

Question 44

package

Answer 44

a collection of components and / or other packages;

Question 45

qualified association

Answer 45

where a qualifier is added to the Class_A end of the association but with the qualifier being derived from a Class_B end attribute;

Question 46

recursive association

Answer 46

a relation between a class and itself;

Question 47

role name

Answer 47

where the doer (or doee) of the association is labelled at the relevant end;

Question 48

sequence diagram

Answer 48

reps the message-sends with time flowing downwards;

Question 49

signature

Answer 49

the name, parameters and return type of an SO;

Question 50

state machine

Answer 50

reps the states an object goes through during its life;

Question 51

static analysis tools

Answer 51

tools that test SS at compile time;

Question 52

UC realisation

Answer 52

mapping UCs to their SOs