Mongodb Certified Developer Associate C100dev · Free Practice Question Easy
Question 29
In MongoDB, which statement accurately describes a typical task for a MongoDB developer related to schema validation?
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A
Schema validation enables the creation of complex relationships between multiple collections.
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B
Schema validation guarantees the uniqueness of a specific field across all documents in a collection.
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C
Schema validation ensures the presence of required fields and their data types within a document.
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D
Schema validation provides real-time data synchronization across multiple MongoDB instances.
Reveal correct answer
Correct answer: C
A.
While MongoDB supports references and embedding for managing relationships, schema validation itself does not specifically enable complex relationships between collections.
B.
While MongoDB provides unique index options, schema validation is not directly responsible for ensuring field uniqueness across all documents in a collection.
C.
MongoDB's schema validation allows developers to define rules to enforce the presence of required fields and validate their data types within documents.
D.
Schema validation focuses on defining and enforcing data rules within individual documents and collections. Real-time data synchronization across multiple instances is typically achieved using features like MongoDB's replica sets or sharding.
Discussion
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