SQL stands for Structured Query Language, not Sequential. SQL actually isn't that sequential as far as language properties goes, it's more of a declarative language.
MongoDb itself doesn't have foreign keys. Not in the sense that RDBMS' have, where you can declare relationships for which the engine can uphold data integrity. You may find ORMs for MongoDb that adds foreign key-like features on top of MongoDb though.
Thank you and Thanks for Pointing the Mistake, actually when we are mentioning the key of one table in other so it becomes a foreign key automatically, so I was referring to that Foreign key.
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Just a couple of notes:
SQL stands for Structured Query Language, not Sequential. SQL actually isn't that sequential as far as language properties goes, it's more of a declarative language.
MongoDb itself doesn't have foreign keys. Not in the sense that RDBMS' have, where you can declare relationships for which the engine can uphold data integrity. You may find ORMs for MongoDb that adds foreign key-like features on top of MongoDb though.
Otherwise a fine summary of the differences.
Thank you and Thanks for Pointing the Mistake, actually when we are mentioning the key of one table in other so it becomes a foreign key automatically, so I was referring to that Foreign key.