A bug is an error found during the testing phase of a program \ application. Bugs can be classified as

a.      Logical Bugs :- Where the functionality asked for does not complete the task.

b.      GUI Related Bugs : relates to the Design of the Interface. It is either related to the Application Form \ Reports of the application

c.      Database Related :- Data does not get refreshed \ updated \ deleted \ edited

d.      System Related :- The bug appears if the program is not compatible with the operating system

e.      Software Service Pack :- Sometimes latest updates are available and the program may not be compatible with the same.

f.        Browser Related :- Sometimes latest updates are available and the program may not be compatible with the same.