what is the difference between dbcc checkstorage and other dbcc commands

what is the difference between dbcc checkstorage and other
dbcc commands

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what is the difference between dbcc checkstorage and other dbcc commands..

1.dbcc checkstorage runs checks against the database on
disk. If a corruption is only in memory, dbcc checkstorage
may not detect the corruption. To ensure consistency
between two dbcc checkstorage runs, run checkpoint before
running dbcc checkstorage. However, doing so can turn a
transient memory corruption into corruption on disk.

2.dbcc checkstorage checks the entire database, including
unused pages, so execution time is relative to database
size. Therefore, when you use dbcc checkstorage, there is
not a large difference between checking a database that is
nearly empty and checking one that is nearly full, as there
is with the other dbcc commands.

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what is the difference between dbcc checkstorage and other dbcc commands..

Answer / sucheta khattri

dbcc checkstorage is different from the other dbcc commands
in that it requires:

1.)The dbccdb database to store configuration information
and the results of checks made on the target database.
2.)At least two workspaces to use during the check operation
3.)System and stored procedures to help you prepare your
system to use dbcc checkstorage and to generate reports on
the data stored in dbccdb.
4.)Unlike the other dbcc commands, the performance of dbcc
checkstorage does not depend heavily on data placement.
Therefore, performance is consistent for each session, even
if the data placement changes between sessions.

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