Synchronise sql server changes between databases

What is the best/easiest way to r开发者_开发百科eplicate the changes in one databases to another database?

I say replicate, because the changes may just be one way. However, in some cases there may need to be changes going both ways so also 2 way sync.

This is for a work environment so free or cheap and easy-to-implement solutions are best. Diff has been mentioned, how would this work? (On the database's create script)? What other wwy is there?

Thanks

I blogged about this a while back, mentioning a long list of schema comparison tools - several of them very cheap or free. The thrust of the post, though, is that you get what you pay for: just spending the money on a tool that you know will work is much more cost effective than wasting time on tools that might not (or writing your own solution). I highly recommend you give Red-Gate SQL Compare a trial, as well as a few of the free ones, and you can compare for yourself whether it's worth the money.