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What is Outer join?
They can be employed while we want to keep all the tuples in R, or all those in S or all those in both relations in the result of the JOIN in spite of of whether or not they have matching tuples in the other relation.
In an E-R diagram how attributes are represented ? In an E-R diagram attributes are represented in a ellipse.
WHAT IS DBMS
Explain in details about the f unctions of DBA ?
Replication : It is definite as a copy of a relation. Every replica is stored at a dissimilar site. The alternative to replication is to store only single copy of a relation which
What are called journaling file systems? File systems that support log disks are known as journaling file systems.
Show a centralised schema to support the operation of the system you have chosen, including in particular: the product catalogue; the outlets and respective stocks; customer record
SELECT Statement This statement is used for retrieving information from the databases. It can be coupled with many clauses. Let us talk about these clauses in more detail:
Explain I command in QBE ? I : It is the command in QBE that is used to insert tuple (s) into the database
What are the several forms of identity? a) Value b) Name c) Built-in
Describe the advantage of State chart Diagram A state chart represents a state machine, emphasizing flow of control from one state to other. A state machine is a behaviour whi
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