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What is transaction?
Collections of operations that form a single logical unit of work are known as transactions.
Define Fifth Normal form is concerned with Ans : Fifth Normal form is concerned with Join dependency.
What is NULL? Give an example to described testing for NULL in SQL? The NULL SQL keyword is used to represent either a missing value or a value which is not applicable in a re
What is vertical fragmentation? Vertical fragmentation divides the relation by decomposing the scheme R of relation r.
Difference between Operating System and Database Security Security within the operating system can be executed at various levels ranging from passwords for access to system, t
let us consider a table having 2200 records and the fixed size of the table to be considered as 25.then how many numbers of table is requredto perform horizontal fragmentation
Functional Dependency Consider a relation R that has 2 attributes A and B. The attribute B of the relation is functionally dependent on the attribute A if and only if for every
1. Determine the set of minimal functional dependencies for the following data. The local bakery, Happy Cakes, needs your help designing a database that will support a kiosk in
Ask questiwhat is row indicator in database on #Minimum 100 words accepted#
Fundamentals of Database Management 1. Explain the concept of Foreign Key. How a foreign key differs from a Primary Key? Can the Foreign Key accept nulls? 2. With a necess
Consider the following relations: S (S#, SNAME, STATUS, CITY) SP (S#, P#, QTY) P (P#, PNAME, COLOR, WEIGHT, CITY) Give an expression within SQL for each of queries b
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