Help!  Is DDM the tool for me ?

I'm stepping into two large and complex databases with many tables and much linkage. (running over Oracle 10)
I'm going to be implementing multiple sites with clones of these databases - but each site will have a subset of the total data.
The data is already nicely structured so that there is a single [root] table from which most other tables descend.
I expect to create a model describing all of this, and would love to find out that DDM (or it's exports) can be scripted in some way so that I can move these subsets of data from one site to another in an automated fashion

Automated Fashion?
That is a tough one since I am not sure what automated you want.
SQL Developer Data Modeler has the capability to capture your DB objects and then you can make sub- views with the sub- data you wish to generate DDL with.
However, the tool is free so download and play around all you wish. You can find tutorials, documentation at: http://www.oracle.com/technetwork/developer-tools/datamodeler/overview/index.html
You can download the Data modeler at: http://www.oracle.com/technetwork/developer-tools/datamodeler/downloads/index.html
Michael

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