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Improved performance:As the data is located near the site of its demand, and given the inherent parallelism because of multiple copies, speed of database access may be good for distributed databases than that of the speed that is achievable by a remote centralised database. Also, since every site handles only a part of the whole database, there may not be the similar contention for CPU and I/O services as characterized by a centralised DBMS.
With the help of a suitable diagram gives module wise explanation of system architecture of DBMS.on..
what do you mean by consistency in rdbms?
Order by clause By using this rows can be sorted It is used in the last portion of select statement By default it gets ascending order DESC: is used
WHERE and HAVING clause in SQL ? The WHERE clause is commonly used for implementing conditions on each tuple of the relation. The HAVING clause is used in combination along wi
Describe domain constraints. Domain constraints contain entity integrity and referential integrity. The domain is a set of values that might be assigned to an attribute. The en
Explain the EXEC statement in SQL Ans: All statements which start with EXEC SQL are embedded SQL database statements. High level languages such as C can be employed to write a
Define Signal. It allows methods to respond to events triggered by themselves or by other processes. Each signal corresponds to an exacting event. A signal is represented in Sy
Create an entity relationship diagram, Database Management System
Describe the responsibilities of the DBA and the database designer ? The responsibilities of DBA and database designer are: 1. Planning for the database's future storage needs
it can be possible to create any table without primary key
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