[CALUG] Database question

[Jason C. Miller]

Does anybody know of any queries or tricks to update an entire table in the
fewest operations possible?  Before anyone freaks out and starts yelling
UPDATE() at me, let me explain the scenario and also mention that I'm hardly
a DB/SQL guru.  I've always known just enough to get by.

Here's the scenario...

Table A: (users)

id | name | location | level
--------------------------------------
0 | nobody | nowhere | 3
1 | somebody | somewhere | 2
2 | anybody | anywhere | 1
    .
    .
    .

When a person makes changes to these values from my interface, they are
actually doing it in some structures in memory that are initially an exact
copy of the database table.  Once they are happy with their changes, they
will run a commit() which I will later implement to go through and make all
of the changes to the table from the changes that were made to the copy in
memory.  Normally, I would do this incrementally by writing a loop that
would check for insert()s, delete()s, and update()s.  However, if there's
some SQL voodoo that I could use to do some kind of a sync() between the
virtual table and the database table, I'd much prefer that.  Does something
like this exist?  I did some searching on the web but, as usual, don't know
the EXACT words to search for as not to get bombarded with 90,000,000,000
irrelevant results.

Ideas?

                                                                 -jason

P.S. I'm using SQLite
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