Ruby gem for cloning a subset of production database records

Time ago I discovered a ruby gem that allows you to create database dumps with particular rules.

Inside a file you defined wich tables to dump, which records to s开发者_运维百科kip and which fields to scramble in a nifty ruby DSL.

I can't remember the name of the tool, do you know what I'm talking about?

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After searching for an hour I finally found it. It's called ocelot, here is the homepage: http://exussum.heroku.com/projects/ocelot