MongoDB Interview Questions and Answers
Based on the document-oriented NoSQL database, MongoDB is an open-source database management system (DBMS) that is used for high volume data storage. MongoDB is one of many non-relational database technologies that came up in the mid-2000s for use in big data applications and other processing jobs. Instead of using tables and rows as in other databases, MongoDB architecture uses documents and collections. We have an impressive collection of MongoDB Interview Questions and Answers that is a must-read for all developers!
| About MongoDB | |
|---|---|
| What is MongoDB | MongoDB is an open-source database management system (DBMS) that is used for high volume data storage. MongoDB is one of many non-relational database technologies that came up in the mid-2000s for use in big data applications and other processing jobs. |
| Latest Version | 6.0.1, released on 19th August 2022 |
| Created By | MongoDB Inc. |
| License | Various; see § Licensing |
| Written in | C++, Go, JavaScript, Python |
| Initial release date | 11 February 2009 |
Most Frequently Asked MongoDB Interview Questions
A storage engine in MongoDB is a part of the database, which is responsible for managing and storing data on the disk. The two storage engines in MongoDB are WiredTiger and MMAPv1.
CRUD in MongoDB refers to the fundamental operations - Create, Read, Update, and Delete.
MongoDB uses the method of sharding for enabling deployments of large data sets and operations that demand high throughput. This method allows data to be stored across different machines.
In MongoDB, developers do not need to create a collection. It will get created automatically when a document will be inserted.
The syntax for creating a collection in MongoDB is: db.createCollection(name,options)
To drop a collection in MongoDB, connect to the database where you want to delete the collection.
Type the following command for deleting: db.collection_name.drop()
You can use the db.collection.createIndex() method for creating Indexes in MongoDB.
The command - db.dropDatabse() is used for drop databases in MongoDB.
The limit() method in MongoDB is used for limiting the records in different databases.
Yes. You can use GridFS function in MongoDB for storing as well as retrieving large files such as Images, audio files, and video files.
You can consider CouchDB, Cassandra, Riak, Redis, and HBase as some of the decent alternatives to MongoDB.
Development History of MongoDB
10gen software company started developing MongoDB in 2007 as one of the components of a platform as a service product. However, in 2009, the company moved to an open-source development model and changed its name to MongoDB Inc in 2013. The company made is first release public on February 2009.
Whether you are a fresher or an experienced MongoDB developer, these MongoDB interview questions and answers are all you need to succeed in your next interview.
Latest Version: The most recent version is 4.2.0, which was released in 13 August 2019.
Advantages
- Easy to install and setup.
- Schema-less database.
- Capable of deriving a document-oriented data model
- Secured and scalable.
- Full technical support.
Are you looking to impress your boss and grab the upcoming promotion at work? Here are the most common MongoDB interview questions to help you do that.