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Explain the disadvantages of using DBMS
There could be a few disadvantages of using DBMS.
As DBMS requires computers, we have to invest a good amount in acquiring the hardware, software, installation facilities and training of users.
We have to keep regular backups because a failure can happen any time. Taking backup is a lengthy process and the computer system cannot perform any other job at this time.
Whereas data security system is a boon for using DBMS, it must be very robust. If someone can bypass the security system then the database would become open to any type of mishandling
aggregation
CREATE TABLE prodtrans ( pno number (4) ptype char (1) CHECK (ptype in ('I','R','S')), qty number (5) FOREIGN KEY pno REFERENCES product (pno) ON DELETE CASCADE);
how to write a in a text and load it on mysql
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What is the disadvantage of a call by reference? During a call by reference damage or loss of data is not restricted to the subroutine, but will instantly lead to alters to th
Given the following relations TRAIN (NAME, START, DEST) TICKET (PNRNO., START, DEST, FARE) PASSENGER (NAME, ADDRESS, PNRNO.) Write SQL expressions for the following queries: No
Which language used in application programs to request data from the DBMS is referred? Language which is used in application program is DML to request data from the DBMS is ref
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Give the two reasons for allowing concurrency
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