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Data Relationship ↔ how data in one data entity (field/doc/etc) can relate to other entities

1:Many Data Relationship in MongoDB Relational DB determines whether to use Denormalization/Normalization

1:1​

one field to only one value Data Relationship

1:Many​

one field map to many values Data Relationship

Many:Many

References​

  1. 1:Many ↔ one field map to many values Data Relationship

  2. 1:Few ↔ of Data Relationship where one field can match a few values

  3. 1:Ton ↔ of Data Relationship where one field can match to millions/infinite values

  4. 1:1 ↔ one field to only one value Data Relationship