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More documentation updates. (CVS 951)

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FossilOrigin-Name: 24b9b569240d2108b17420d85cafdc718c67269f
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drh
2003-05-03 19:04:03 +00:00
parent 2bfc9dbdcf
commit e96fa95e8a
4 changed files with 59 additions and 24 deletions
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28
www/faq.tcl
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@ -1,7 +1,7 @@
#
# Run this script to generated a faq.html output file
#
set rcsid {$Id: faq.tcl,v 1.21 2002/11/06 14:08:12 drh Exp $}
set rcsid {$Id: faq.tcl,v 1.22 2003/05/03 19:04:04 drh Exp $}
puts {<html>
<head>
@ -398,6 +398,32 @@ COMMIT;
</pre></blockquote>
}
faq {
I deleted a lot of data but the database file did not get any
smaller. Is this a bug?
} {
<p>No. When you delete information from an SQLite database, the
unused disk space is added to an internal "free-list" and is reused
the next time you insert data. The disk space is not lost. But
neither is it returned to the operating system.</p>
<p>If you delete a lot of data and want to shrink the database file,
run the VACUUM command (version 2.8.1 and later). VACUUM will reconstruct
the database from scratch. This will leave the database with an empty
free-list and a file that is minimal in size. Note, however, that the
VACUUM can take some time to run (around a half second per megabyte
on the Linux box where SQLite is developed) and it can use up to twice
as much temporary disk space as the original file while it is running.
</p>
}
faq {
Can I use SQLite in my commerical product without paying royalties?
} {
<p>Yes. SQLite is in the public domain. No claim of ownership is made
to any part of the code. You can do anything you want with it.</p>
}
# End of questions and answers.
#############