i do'nt know that is this right palce(forum/thread) for asking these questions....actually i am facing some problem in these words......

1. what is Test Cases, Data Access Layer Classes(DALC) and Enterprise Library?
2. why should we use these thing?
3. whats the use of these thing when we creating a new project?
4 And if "Coding Standerds" is the only moto for these things then what's the use of creating all.... we can do the same in either DALC or Enterprise Library?

Help me.....

Thanx and Regards
Suds