how to update pdb

1 Approach: DB -> <carl's script> -> Python ->

1. model --> T: C1, C2, C3, C4-C5,
2. annotation -->

2 approach: DB -> incremental changes (diff)

1. model -> T: Rename C4 to C5
2. annotation

Todo:

Dump using carl's script to generate python scripts --- to bootstrap --> 190 python files --> ignore model and use the script to maintain all annotations.
--> For model changes, create different scripts for different changes.

Annotation:

schema-annotation table-annotation column-annotation foreign-annotation

add-col1, rename1, renametable