Is an object attribute deleted from the store as it is removed?Interview question of mongoDB set 2/MongoDB Interview Questions and Answers for Freshers & Experienced

Is an object attribute deleted from the store as it is removed?

Yes, you can erase the attribute and then re-save() the object.

*Basic MongoDB interview questions like these are quite frequently asked to test the basic knowledge of the candidate.

Posted Date:- 2021-08-31 07:43:16

What happens when the Shard is slow or down while querying?

How do we configure the cache size in MongoDB?

How do we perform the Join operations in MongoDB?

Does MongoDB require plenty of RAM?

What are the elements of the Sharded Cluster?

Explain Vertical Scaling and Horizontal Scaling?

What does ObjectId contain?

What are the points we should consider while creating a schema in MongoDB?

Why do we use the pretty() method?

Which command we use for dropping a database?

How do you refer to the current database in a statement? (by using db)

Explain the procedure of starting the MongoDB server/ instance?

Which command we use for creating the backup of the database?

What is the syntax of the skip() method?

How do we create a database in MongoDB?

Define oplog(operational log)?

How do we perform sorting and Explain Project in MongoDB?

What is the difference between a secondary and a slave?

What exactly is journaling, and how does it function?

What is the significance of a covered query?

Does an update fsync to the disk immediately?

What is the structure of ObjectId?

What is the purpose of the DB command?

What is the purpose of the save() method?

Explain Splitting?


Can MongoDB Support foreign key constraints?

What are the commands to create a backup of the data and restore the data?

What is the importance of profiler in MongoDB?

Explain Sharding and Aggregation in MongoDB?

How does MongoDB provides concurrency?

How to do Journaling in MongoDB?

How to do locking or transactions in MongoDB?

What is the importance of GridFS and Journaling?

In MongoDB, how are constraints managed?

What factors should be considered while constructing a schema in MongoDB?

What language is MongoDB written in?

Compare MongoDB with Couchbase and CouchbaseDB.

Are null values permitted?

How do you see the connections used by Mongos?

How can applications access real-time data changes in MongoDB?

What is the replication mechanism in MongoDB?

“When you add more slaves to a replica set, both writes and reads become faster.” Is this claim correct or incorrect? Why is this so?

Is it essential for MongoDB to have a ton of RAM?

When and to what degree does data become multi-slice?

Is an object attribute deleted from the store as it is removed?

In MongoDB, how do you use the primary key?

MongoDB is referred to as a schema-less database. Is this true? How can you make a schema in MongoDB?

List some of the data types supported by MongoDB.

Is it possible to establish primary key – foreign key relationships in MongoDB?

What are the main distinctions between BSON documents in MongoDB and JSON documents in general?

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