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Software development processes (Requirments (WRSPM (
Software development processes
Requirments
2 minings
Process
understand a problem
propose a solution
WHAT not HOW
Product
informal agreement
document (SRS)
Requirments problems are:
the most costly
the most difficult to identify
the most difficult to correct
2 audiences
Users
User requirment
written on user language
Developers
System cpecification
written on systm language
2 types
Functional
what system will do
Non-functional
how the system will perform the behaviors
Product R
Organisation
External
WRSPM
World
Requirments
Srecification
Program
Machine
Architecture