chapter 1

Question 1

what is software engineering?

Answer 1

analyzing problems and creating software solutions.

analysis: decomposing problems into smaller pieces.
synthesis: compose software from smaller building blocks.

also: a discipline that uses computer and software technology as tools.

Question 2

system development: method

Answer 2

a formal set of steps for producing a product. (sdlc)

Question 3

system development: tool

Answer 3

instrument or system to accomplish a task in a better way

Question 4

system development: procedure

Answer 4

a recipe. a combination of tools and techniques to produce a product.

Question 5

system development: paradigm

Answer 5

philosophy or approach to building a product (oop)

Question 6

computer science

Answer 6

computer hardware, compilers, os, programming languages; mainly theoretical.

Question 7

software engineering vs computer science

Answer 7

use of computer science (theories and whatnot), to create software solutions to problems.

Question 8

fault

Answer 8

human errors

Question 9

failure of a system

Answer 9

system does not meet requirements

Question 10

safety-critical

Answer 10

failure that poses a threat to life or health

Question 11

what is quality

Answer 11

quality of the product
quality of the process
quality of the product in context of the business enviro.

Question 12

context of business quality

Answer 12

return on investment (quantified quality as a number)

Question 13

quality of the process

Answer 13

protocol to ensure quality. example: iso 9000.

Question 14

quality of the product

Answer 14

meets the requirements of the stakeholders.

Question 15

who does software engineering

Answer 15

customer (clients), developer, and user

Question 16

elements of a system

Answer 16

activities, objects, relationships, and system boundaries.

Question 17

elements of a system: activities

Answer 17

an event (actions).
eg: a person breathing.

Question 18

elements of a system: objects

Answer 18

elements involved in the activity.

eg: the oxygen a person breaths.

Question 19

elements of a system: relationships

Answer 19

interaction between activities and objects.

eg: breathing takes in air which contains oxygen.

Question 20

elements of a system: system boundaries

Answer 20

origin of the input and destination of the output.

eg: the respiratory system of a human.

Question 21

interrelated system

Answer 21

a complex or large system that contains sub-systems.

Question 22

steps of building a system

Answer 22

1. requirement analysis
2. system design
3. program design
4. program writing
5. unit testing
6. integration testing (putting objects together)
7. system testing (all objects placed together)
8. system delivery (training users)
9. maintenance

Question 23

user interface prototyping

Answer 23

a small version of the system.

• used to identify key requirements
• demonstrates feasibility
• develops good user interface

Question 24

software architecture

Answer 24

System is described in a set of architectural units.

eg: oop.