MongoDB Interview Questions

 

Introduction to MongoDB

When dealing with data, there are two types of data as we know – (i) structured data and (ii) unstructured data. Structured data is usually stored in a tabular form whereas unstructured data is not. To manage huge sets of unstructured data like log or IoT data, a NoSQL database is used.

Now, what is MongoDB?

• MongoDB is an open-source NoSQL database written in C++ language. It uses JSON-like documents with optional schemas. 
• It provides easy scalability and is a cross-platform, document-oriented database.
• MongoDB works on the concept of Collection and Document.
• It combines the ability to scale out with features such as secondary indexes, range queries, sorting, aggregations, and geospatial indexes.
• MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License (SSPL).

MongoDB Basic Interview Questions

1. What are some of the advantages of MongoDB?

Some advantages of MongoDB are as follows:

• MongoDB supports field, range-based, string pattern matching type queries. for searching the data in the database 

• MongoDB support primary and secondary index on any fields

• MongoDB basically uses JavaScript objects in place of procedures

• MongoDB uses a dynamic database schema

• MongoDB is very easy to scale up or down

• MongoDB has inbuilt support for data partitioning (Sharding).