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Nested fields are we need to use mandatory for schemas
what is Nested fields,where we use ?
what is Nested fields,where we use ?
can you specify what you mean?
in general, nesting is creating a hierarchical structure of fields e.g., by having a field of type object, that may contain attributes which can add even more nesting etc.

it really comes down to your needs and what kind of structure makes most sense to represent your data.
I would aim for a fairly flat structure though.
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