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3NF Normal Form
A relation schema R is in 3NF if it is in 2NF and for each FD X A either of the following is true
In other words, if every non prime attribute is non-transitively related on primary key.
Aggregation : One limitation of the E-R diagram is that they do not permit representation of relationships between relationships. In such a case the relationship along with its ent
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draw er diagram using entities crop,employee,department,plot,cultivation plan,machinery,seed,fertilizer
FDs in Entities : Student entity : Enrolment number → Student name, Address Course Entity :
The Database Approach In order to overcome the limits of a file system, a new approach was needed. Hence a database approach emerged. A database is a persistent collection of
Inconsistent Analysis : The problem as given with transactions T1 and T2 where two transactions interleave to make incorrect result during an analysis by Audit is the instance of s
Using Literal Character String Example: To print IS A as one string with column name employee SELECT ENAME || ' IS A ' || JOB AS "EMPLOYEE" FROM EMP;
compare the features of oracle RDBMS with MySQL and Microsoft SQL server
random file sharing
HOW TO SOLVE THE LP Problems by simplex method?z=x1+-3x2+2x3
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