> 1) TEIID should be able to understand that the two things have different extension so are different models
Does the metadata supplied by Designer in the vdb.xml contain two model entries with the same name? I would have expected an earlier exception from our schema validation. Although I don't think we're checking case-insensitive at that point.
If that's the case, obviously that is not what Teiid wants to see. I would also expect Designer to prevent that.
> 2) TEIID Designer should you warn against using the same name twice in the project.
It should be doing that check. But if it's not, then please open a Designer JIRA and attach your vdb.xml.