What is bcnf boyce-codd normal form, Database Management System

BCNF Boyce-Codd Normal Form

A relation schema R is in BCNF if it is in 3NF and accepts an additional constraint that for every FD X A, X has to be a candidate key. If a relational process is in BCNF then all redundancy based on functional dependency has been replaced, although other kinds of redundancy can still exist. A relational schema R is in Boyce-Codd normal form if and only if for each one of its dependencies X → Y.


2290_BCNF Boyce-Codd Normal Form.png

Posted Date: 7/30/2012 2:24:59 AM | Location : United States

Related Discussions:- What is bcnf boyce-codd normal form, Assignment Help, Ask Question on What is bcnf boyce-codd normal form, Get Answer, Expert's Help, What is bcnf boyce-codd normal form Discussions

Write discussion on What is bcnf boyce-codd normal form
Your posts are moderated
Related Questions
For the relations R and S given below: R                      S A B C 1 4 7 2 5 8 3 6 9

What are the reasons of bucket overflow? Explain any two methods for solving this problem. Ans:  It is general for file structures to be divided into equal-length partitions, k

Advantages And Drawbacks Of Ddbms  There are various reasons for building distributed database systems, with sharing of data, reliability and availability, and speedup of query

Which component is not included in database environment ? A users component is not included in database environment.

Explain several types of constraints that can be specified using CREATE TABLE command. Explain CASCADE and RESTRICT clauses of DROP SCHEMA command? Constraint Description PRIM

Exclusive lock It is asked for by a transaction on a data item that it wants to update. No other transaction can put either a shared lock or an exclusive lock on a dat

Drawbacks of Data Distribution: The primary drawbacks of distributed database systems are the added complexity needed to ensure proper coordination between the sites. This increas

Consider the two relations given below Given that A is the primary key of R, D is the primary key of S and there is a referential integrity among S.A and R.A, discuss all

Example : Create a sequence named SEQSS that starts at 105, has a step of 1 and can take maximum value as 2000.  CREATE SEQUENCE SEQSS START WITH 105 INCREMENT BY 1 MAX VA

what is attribute is attribute inheritance in dbms?