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/*
To Setup all above schema in database, from this point,
Assume that you only have empty database.
This is not a migration sql. but a entire setup sql for top schema.

If can;t under refer existing docs..
*/

/*
How to migrate from previous version to this db version
write migration sql here. assume that db is at pervious version.
*/

/*
Write a revert sql that unapply this migration on db. and takes db to it perivious state. (atleast try that)
Because, may be disapply migration might break data.
*/