Development and testing
The three main stages occurring development and testing are:
1- Create the system
2- Testing the system
3- Improving the system
Testing and improving the system in happening continuously till the system codes are 100% correct.
Testing strategies:
Its about comparing the expected results and the actual ones.
The testing types:
1-Test data:
There are three types of the test data:
Normal: valid data
Abnormal: not valid
Extreme: The maximum or minimum data value
Example: The students marks must be >0 and <100
A- Normal data: The marks of the students is 90
B- Abnormal data: His mark is 120
C- Extreme data: His mark is 100
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2- Live data: The existing system data, the real ones.
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