Increase in Database size after restoration

we have taken a production database back up of size 1.8 GB.
we restored the database on a standalone system and the size of the database
was same.
We executed some scripts through which some records got inserted.
After the inserts the database size has drasticallly increased to 5.8 GB.
The database whose size is 5.8 GB was due to the increase in reservedspace
and unused spaces of the tables where in the records got inserted.
Then we exported the database through DTS and imported the data and shruk
the database to which the size of the database got reduced to 2 GB.
I wanted to know what is the reason for the increase in database size when
we executed the insert scripts. And how to avoid it. Or any approach by which
we can find the solution.
Read this article
http://www.sql-server-performance.co...e_settings.asp
"CUBak_DBSize" <CUBak_DBSize@.discussions.microsoft.com> wrote in message
news:3D114A81-F276-4FB9-A878-6C6712058129@.microsoft.com...
> we have taken a production database back up of size 1.8 GB.
> we restored the database on a standalone system and the size of the
database
> was same.
> We executed some scripts through which some records got inserted.
> After the inserts the database size has drasticallly increased to 5.8 GB.
> The database whose size is 5.8 GB was due to the increase in
reservedspace
> and unused spaces of the tables where in the records got inserted.
> Then we exported the database through DTS and imported the data and shruk
> the database to which the size of the database got reduced to 2 GB.
> I wanted to know what is the reason for the increase in database size when
> we executed the insert scripts. And how to avoid it. Or any approach by
which
> we can find the solution.
>