The JSON data type is basically a blob that stores JSON data in raw format, 

preserving even insignificant things such as whitespace, the order of keys

in objects, or even duplicate keys in objects. It offers limited querying 

capabilities, and it's slow because it needs to load and parse the entire 

JSON blob each time.

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JSONB on the other hand stores JSON data in a custom format that is optimized

for querying and will not reparse the JSON blob each time.