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Data Control The data control mostly refers to commands that permit system and data privileges to be passed to several users. These commands are usually available to database administrator. Let us see some data control language commands:
write on the various type of relationalkey
Failures and Recovery In practice various things might occur to prevent a transaction from completing. Recovery methods are used to bring database, which does not satisfy consi
er diagram on cosmetics.
Define page. The database is partitioned into some number of fixed-length blocks, which are referred to as pages.
Explain Two phase locking protocol A transaction is consider as to follow the two-phase locking protocol if all locking operations precede the first unlock operation in the tra
Australian Bureau of Statistics (ABS) provides retail data for different groups and different states as well as the aggregate numbers. Table 11 " Retail Turnover, State by Industry
What is a primary key? Primary key is chosen by the database designer as the principal means of identifying an entity in the entity set.
What is an index? An index is a structure that helps to place desired records of a relation quickly, without probing all records.
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Ask question #Minim 100 words accepted#what is recovery management component in database management system and how it is useful
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