Define the boyce-codd normal form, Database Management System

Assignment Help:

Define the Boyce-Codd Normal Form with instance and also Compare BCNF and 3NF.

Ans: BCNF: For each functional dependency X->Y in a set F of functional dependencies over relation R, either:

Y is a subset of X or,
X is a superkey of R

While

3NF: For each functional dependency X->Y in a set F of functional dependencies over relation R, either:

Y is a subset of X or,
X is a superkey of R, or
Y is a subset of K for few key K of R

a. there is no subset of a key is a key

Related Discussions:- Define the boyce-codd normal form

What are the ways in which signal can be generated, What are the ways in wh...

What are the ways in which signal can be generated A signal might be generated in many ways such as a Signal is result of particular physical condition. Whenever a process writ

Differentiate between static hashing and dynamic hashing, Differentiate bet...

Differentiate between static hashing and dynamic hashing. Ans: Static Hashing comprises the number of primary pages in the directory fixed. So, while a bucket is full, we requ

Self-join, Self-Join: In a self join a table is joined with itself. Let ...

Self-Join: In a self join a table is joined with itself. Let consider the following sample partial data of EMP table EMPNO ENAME MGRID

Cataloguing, differences between a classified catalog and a dictionary cata...

differences between a classified catalog and a dictionary catalog

Product adder required for ecommerce website, Product adder required for Ec...

Product adder required for Ecommerce website Project Description: Want a product adder for 500 products I have a magento website and need products pulled from site A to my si

What are the types of reference, What are the types of reference?explain it...

What are the types of reference?explain it with suitable examples? Object oriented language given the ability to refer the object attribute of the type can be referred to the s

Recovery management component, Ask question #Minim 100 words accepted#what ...

Ask question #Minim 100 words accepted#what is recovery management component in database management system and how it is useful

What are the different integrity constraints in rdbms, What are the differe...

What are the different integrity constraints in RDBMS? The various integrity constraints in RDBMS are as: Primary Key: primary key is a grouping of one or more attributes

Time stamp ordering, explain in detail about time stamp orderting/

explain in detail about time stamp orderting/

Convert erd to rdm model, Regional Gardens has many nurseries, including Wa...

Regional Gardens has many nurseries, including Wagga Wagga, Bathurst, Albury, Orange, and Dubbo. Each nursery is known by its campus code, eg WW, B, A, O and D respectively. Additi

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages