ye juan wrote:
>    I have completed some projects in Squeak already.
> Now I want to store them in Database to manage them
> conviniently, which is similar to projects on
> internet.
>    I want to store some projects into database. Please
> tell me:
> (1) in what format I store them;
> (2) what type of database I should choose;
> (3) how I index for them.
>    How can they be stored? They are only linked
> or stored in DB,aren't they?

What kind of projects are these?

If they are just source code, you have at least two options:
* change sets
* Monticello

If they are entire projects, you can save them to a .pr file on your 
disk, or on a SuperSwiki server like Bob's Super Server.

I don't know what using a database would do for you.

Please tell us what you want to do with this database.