unit 7

Question 1

What is the development life cycle?

Answer 1

A series of steps that are followed to produce a system.

Question 1

What are the 4 different stages of the programming development cycle?

Answer 1

analysis- abstraction, decomposition of the problem, identification of the problem and requirements.
design- decomposition, structure diagrams, flowcharts and pseudocode.
coding- writing program code and iterative testing
testing- testing program code with use of test data.

Question 2

decomposition

Answer 2

splitting problems into subproblems

Question 3

what are the components parts formed after decimposution of a problem?

Answer 3

-inputs
-processes
-outputs
-storage

Question 4

what are the methods to construct a solution to the problem?

Answer 4

-structure diagrams, a hierarchal diagram that shows the decomposition of a system.
- flowcharts, a diagrammatic representation of an algorithm.
pseudocode- code-like statements that are used to design an algorithm but do not follow any specific language.

Question 5

range check

Answer 5

a type of validation that makes sure data is between the minimum and the maximum.

Question 6

length check

Answer 6

A type of validation that checks the number of characters is within a set a limit.

Question 7

Type check

Answer 7

A type of validation that checks data is the correct data type.

Question 8

presence check

Answer 8

A type of validation that makes sure data has been entered.

Question 9

Format check

Answer 9

A type of validation that makes sure the data meets a specific order.

Question 10

check digit

Answer 10

• a type of error detection method that is used for data entry.
• A calculation is performed on the data entered to create a value.
  -Check digit values are compared to see if the data entered is correct.

Question 11

Validation

Answer 11

the checking of data to make sure it is reasonable and within set bounds.

Question 12

verification

Answer 12

Checking that data is entered accurately, that is the same as the original.

Question 13

visual check

Answer 13

comparing data entered with the original side-by-side.

Question 14

double entry check

Answer 14

two different people enter the same data which are then compared

Question 15

test data

Answer 15

the input data that is used to test a system

Question 16

normal test data

Answer 16

data that a program should accept

Question 17

abnormal test data

Answer 17

data that a program should not accept

Question 18

extreme test data

Answer 18

data that is on the edge of what is allowed.

Question 19

boundary test data

Answer 19

data that is on the edge of being accepted and being rejected.

Question 20

truce table

Answer 20

a structure to complete when waking through an algorithm manually, where the value that change are written in each row.

Question 21

flowcharts

Answer 21

a diagrammatic representation of an algorithm.