41.Can you configure the cache size for MMAPv1? How? No. MMAPv1 does not allow configuring the cache size. (167)
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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 Continue Reading »
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 Continue Reading »
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 Continue Reading »
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 Continue Reading »