title: Finding highest normal form of a relation of database
body: <p>What is the highest normal form of relation R(A,B,C,D), given FDs <strong>A--> B; CD--> B; A--> CD; CD--> A</strong> ? <strong>Please</strong> not only give the answer but also give a <strong>step by step approach</strong> to solve a problem of this kind.</p>