Lecture 16

Question 1

The term software engineering refers

to

Answer 1

the study of software development on large scales.

Question 2

The Waterfall Model

Answer 2

Marketing (Requirements)
Analysis (Specifications)
Design (Architecture)
Implementation (Untested Software)
Testing (Program)
Maintenance

Question 3

The idea of Use Cases is to determine

Answer 3

how potential users with differing roles would need to use a program to accomplish their tasks.

Question 4

UML

Answer 4

Each class and interface gets specified, along with arrows to show the relationships among them.
The methods (and fields, for classes) of each are also specified.

Question 5

Focuses of Use Cases

Answer 5

“Who” can do “what”?
Each potential “who” is referred to as an actor.
“What” needs to be done, rather than “how” it should be done.

Question 6

Use of Use Cases

Answer 6

They’re very useful for communicating with clients.
Relatively simple notation, visually clear.
Helps to flesh out requirements.
They also help to design test cases for later use.

Question 7

Why is it important to get good requirements initially?

Answer 7

70% of all projects failed, or were incomplete due to going overbudget or overschedule.
Changing or unclear (poor) requirements.
Could be overlooked, incorrect or poorly communicated.

Question 8

Analysis

Input

Answer 8

what data will be input into the program by one or more “actors”?

Question 9

Analysis

Outputs

Answer 9

what data will our program generate that will be needed by one or more “actors”?

Question 10

Analysis

Constraints

Answer 10

to model what objects represent in the real world more accurately.

Question 11

Analysis

Assumptions

Answer 11

Are we operating under any sort of assumptions?

Either on our own part or on those of the client?

Question 12

Analysis

Modifications

Answer 12

Whenever an object within the program is modified, will any corresponding changes be expected elsewhere within the system?

Question 13

Analysis

Relationships/Effects

Answer 13

How are system-level modifications related to system constraints?

Question 14

Once the specification is completed, the next step is to

Answer 14

determine the design for the desired system.

Question 15

The goal of the design process is to

Answer 15

develop the potential structure for a codified system which would fulfill the determined specification for the desired program.

Question 16

Ideal Program Division

Answer 16

The manner by which the different data elements will be represented internally does not have to be tied to its representation for input or output.

Question 17

How can we represent these design ideas for a given programming project effectively and efficiently?

Answer 17

One super-common visualization tool for the design process is known as UML: the Unified Modeling Language.

Question 18

Standard structure of a UML diagram element for a class

Answer 18

MyClass
int integer_field
- String string_field
\+ int get_Integer_Field()
\+ void set_Integer_Field(int)
\+ void doSomething(String, int)