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How to identify difference between two databases' schema changes?

Posted on 2013-01-23
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Last Modified: 2013-01-28
I've existing DB called A. I created another DB called B from the backup of A.

I do modification in both databases. Say for example, in database A, in tableA a new column has been added. In database B, in tableA a column has been dropped.

I would like to know the schema changes. How to identify them? Is there any FREE tool existing for that? Or any other way existing to identify this? Or If I want to implement new tool what approach I've to follow?

Please do guide me.
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Question by:Easwaran Paramasivam
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Expert Comment

by:appari
ID: 38813125
Do you want to keep both the databases same all the time or you just want to know the changes? if you want to keep both the databases same you can try replication available in sqlserver.
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Author Comment

by:Easwaran Paramasivam
ID: 38813136
Not in same time. A database in used in my application version 1.0 and B database is used in application version 2.0.

Note: I'm using SQL SERVER 2008 R2.
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Expert Comment

by:appari
ID: 38813148
so you just want to know the differences only?
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Expert Comment

by:appari
ID: 38813153
this tool from redgate helps in comparing schemas
http://www.red-gate.com/products/sql-development/sql-compare/
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Author Comment

by:Easwaran Paramasivam
ID: 38813173
Once I know the difference, I need to upgrade the schema from lower version to higher version (means a common database which works in my application version 2.0). I know already database B works for application version 2.0. But I would like to incorporate the changes done in database A as well. So that I no need to maintain two databases.
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Author Comment

by:Easwaran Paramasivam
ID: 38813174
Found sqlcompare is useful. It is commercial one. Any such kind of free tool available? If not, I would like to create my own tool. Please guide me how to achieve that?
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Expert Comment

by:appari
ID: 38813185
trail version is available for download. you can download and use it to do the work.
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Assisted Solution

by:appari
appari earned 1000 total points
ID: 38813187
freetool http://dbcomparer.com/ i never tried it so can't say how it works
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Accepted Solution

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mimran18 earned 1000 total points
ID: 38816184
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Author Closing Comment

by:Easwaran Paramasivam
ID: 38826079
Thanks.
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