Define first normal form and second normal form, Database Management System

Assignment Help:

First Normal Form and second normal form

First Normal Form (1NF)

A relation is said to be in 1NF if it having no non-atomic values and each row can give a unique combination of values.

Second Normal Form (2NF)

A relation is said to be in 2NF f if it is already in 1NF and each attribute fully depends on the primary key of the relation. Speaking inversely, if a table has some attributes which is not dependant on the primary key of that table, and then it is not in 2NF.

Related Discussions:- Define first normal form and second normal form

ERD, A student entity type has the following attributes,name..

A student entity type has the following attributes,name..

In a hierarchical model of data records are organized, In a Hierarchical mo...

In a Hierarchical model of data records are organized ? In the hierarchical model of data records are organized as Tree structure.

Create an entity relationship diagram, Create an entity relationship diagra...

Create an entity relationship diagram, Database Management System

What is the error handling, What is the error handling Traditionally, b...

What is the error handling Traditionally, bits have been sent over line lacking any error correcting scheme in physical layer. The presence of the CPU in each modem makes it po

Er diagram of textile industry, complete er diagram of textile industry man...

complete er diagram of textile industry management

Define Fifth Normal form is concerned with, Define Fifth Normal form is con...

Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.

Determine the advanced modeling concepts, Determine the Advanced modeling c...

Determine the Advanced modeling concepts You have to follow some steps for object-oriented design. These steps for OO Design methodology are as follow: 1) Produce objec

Describe deductive databases and relational databases, Problem : (b) A ...

Problem : (b) A deductive database system is essentially the outcome of applying mathematics logic to database management, where logic is used for both data representation and

Accounting and external reporting, List the internal controls that should b...

List the internal controls that should be in effect solely because a EDP system is employed, classifing them as (1) Those controls pertaining to input of information and (2) All ot

Describe disk manager and their work, Describe disk manager and their work?...

Describe disk manager and their work? Disk Manager: Responsible for fetching data regulated through file Manager from disk storage within Main memory and deciding what data to

Write Your Message!

Name

Email id

Message

Verfication Code

User Account

All Pages