Measuring the quality of queries in the fuzzy relational databases

[[abstract]]In this paper, we develop a new method to measure the quality of each tuple as an answer with respect to Select-Project-Join (SPJ) queries so that we can determine which answers are better answers to the given query in a fuzzy relational database. The quality of an answer is viewed as how much sure information is provided, and how much extra information is needed so that it will be a sure answer to the query. The less extra information that is required and the more sure information that is provided by an answer, the higher the quality of that answer is, and in consequence, it will be more reliable