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migrating a database to another programmatically

Tiju Thomas
Greenhorn

Joined: May 25, 2008
Posts: 22
Is there any java utility to programmatically copy a database to another (say from sqlserver to derby)? I found org.apache.ddlutils but it suggests using ant. I wanted to do it programmatically using java. Any idea is helpful
Scott Selikoff
Saloon Keeper

Joined: Oct 23, 2005
Posts: 3697
    
    5

There are plenty of off the shelf, comercial solutions but not many via an embedded library. In general, though, I've found it doesn't take much work to write one yourself for a specific task. If you use the meta data API, you can read a database and create a file of SQL create/insert commands, formatted for the new database. Then just call a bulk script on the file and load it into the new database. In general, converting a database is non-trivial process so doing it yourself gives you a lot of control of what goes to what.


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Tiju Thomas
Greenhorn

Joined: May 25, 2008
Posts: 22
Scott Selikoff wrote:If you use the meta data API, you can read a database and create a file of SQL create/insert commands,


Thanks much Scott. How exactly we can create a file of SQL from the metadata? Do we have any code sample over the net anywhere?
 
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