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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Why did you change the table name to d (assuming this is in fact what you did)? And why is this best practices?
Poorly written instructions. Need to provide column names.
Poorly written instructions