January 3, 2008 at 1:22 pm
..
Thanks,
Chinna
Its the Journey which gives you Happiness not the Destination-- Dan Millman
January 3, 2008 at 1:42 pm
Carefully and patiently.
This is a tedious process, as it requires careful planning and implementation. You should first design your data mapping strategy. The most difficult part of this process is making sure the data in one database matches the types/constraints of the other. Once you have mapped everything out, you can begin adjusting the tables/data to fit the new requirements of the fully migrated database. Once you are ready to begin migrating data, I suggest you acclimate yourself with SSIS because SSIS will be your best friend during this process. SSIS provides you the scalability and flexibility to mold data to fit your needs.
January 3, 2008 at 5:31 pm
Most importantly "Normalize" your DB when you are done. There will be a lot of redundant data as you merge your DB's.
January 4, 2008 at 6:00 am
More detail would be needed to provide useful answers. Does merge mean two identical structures but different data, two completely different structures but similar data, two totally different structures and utterly different sets of data? The details between these different requirements are going to dictate totally different approaches. A few commonalities will exist. Even if you assume totally different structures and completely different data, it's doubtful that that will be absolute. There are probably commonalities. These will need to be identified and then treated as if it were one of the other two approaches.
If you want more precise help, provide more detail about what you're hoping to achieve and what your starting point is.
----------------------------------------------------The credit belongs to the man who is actually in the arena, whose face is marred by dust and sweat and blood... Theodore RooseveltThe Scary DBAAuthor of: SQL Server 2017 Query Performance Tuning, 5th Edition and SQL Server Execution Plans, 3rd EditionProduct Evangelist for Red Gate Software
January 4, 2008 at 9:27 pm
And then there's the subject of primary keys... especially if they're based on IDENTITY.
--Jeff Moden
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