Document - is a way to organize and store data as a set of field-value or key-value pairs.
Field/Key - is a unique identifier for a document.
Value - data related to a given identifier.
Collection - an organized store of documents in MongoDB, usually with common fields between documents. There can be many documents per collection and many collections per database .
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1) In MongoDB how does a document relate to a collection?
Collection consist of one or many documents.
2) In a MongoDB Document what is the role of fields and values?
* A field is a unique identifier for a specific document.
* Each field has a value associated with it.
Reference: university.mongodb.com | MongoDB, Inc.