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How to enable/disable constraints in sybase

Posted on 2010-09-08
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Last Modified: 2012-05-10
i have two databases one is source database and another one is target database. i need to load the data from source to target data base. before going to that i need to disbale contraints.  and after loding the data in to target databse i need to enable the contraints. can you help me out what is the code for that.
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Question by:vkchaitu82
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Joe Woodhouse earned 2000 total points
ID: 33627269
ALTER TABLE [...] DROP CONSTRAINT [...]

ALTER TABLE [...] ADD CONSRAINT [...]


If you don't currently have scripts or source code for the schema to do this, you can easily automate it. The built-in "ddlgen" (search your Sybase directory) can do this for you, or search the web for "db_schema".
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by:Joe Woodhouse
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Building on my previous answer - you cannot disable constraints in Sybase ASE except by completely dropping them. Likewise the only way to re-enable them is to create them again.
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