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  1. Which of the following is not the class of NoSQL?
    1. Memcache
    2. Key-value stores
    3. Multidimension stores
    4. Document stores
    5. None of these
Correct Option: A

The most basic class of NoSQL is key-value stores and commonly used in web infrastructure. Multidimension stores are more complex data relationships, here data is stored in rows and columns. MongoDB and CouchDB are the examples of Document stores.



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