Fuzzy logic is used to make decisions better that suit the real world problem more perfectly. In traditional logic, decision are based on exact true or false values, which is sometimes inadequate, and lacks the flexibility in decision making, whereas, fuzzy logic provides a better approach in problem solving by evaluating many alternatives through simple If-Then statements, which resembles human reasoning greatly in handling of imperfect information.

In this paper, we present the meaning of fuzzy logic, its applications and different aspects of fuzzy logic. Finally, utility and applicability of fuzzy logic in clustering has been proposed that may help in mining of data in data warehousing.