MongoDB Interview Questions

41.Can you configure the cache size for MMAPv1? How? No. MMAPv1 does not allow configuring the cache size.

31.What are Primary and Secondary Replica sets? Primary and master nodes are the nodes that can accept writes. MongoDB’s replication is ‘single-master:’ only one node can accept write operations at …

21.What is a covered query in MongoDB? A covered query is the one in which: fields used in the query are part of an index used in the query, and …

11.How can you achieve primary key – foreign key relationships in MongoDB? By default MongoDB does not support such primary key – foreign key relationships. However, we can achieve this …

1.What are NoSQL databases? What are the different types of NoSQL databases? A NoSQL database provides a mechanism for storage and retrieval of data that is modeled in means other …