IS 100% TEST CASE COVERAGE ENOUGH??

The term Test Case Coverage means a measure of how many of the product requirements are being tested by the defined test cases. It is the testers’ job to define their test cases based on the requirements and the goal should be 100% coverage or close to that. Please bear in mind that 100% coverage is not the same as exhaustive testing. Exhaustive testing means testing every path through the software using all possible values. So, its very clear that even though the coverage is 100% i.e. all the requirements are covered yet there will be several other test cases that needed to be tested.