Is there an Open Source Metadata Management Solution? Is there an Open Source Metadata Management Solution? I'd like to create a Metadata Repository that will hold the details of the metadata of database schemas, tables and data items of hundreds of Enterprise databases.

I'm especially interested in something that can automatically query the schema data of the databases to be able to track changes in the metadata related to tables. i.e. changes to column data sizes, tables and columns added etc.
MIKE?
What is MIKE2.0?
MIKE2.0 which stands for Method for an Integrated Knowledge Environment, is an open source methodology for Enterprise Information Management that provides a framework for information development . The MIKE2.0 Methodology is part of the overall Open Methodology Framework.