Table of Contents
MongoDB Interview Questions
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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. MongoDB is developed by MongoDB Inc. and licensed under the Server Side Public License (SSPL). -
What do you understand by NoSQL databases? Is MongoDB a NoSQL database? explain.
NoSQL (not only SQL or non-relational) databases are a type of database that stores data in a non-tabular format, unlike traditional relational databases. They are designed for applications that require high scalability, flexibility, and performance, particularly for handling large amounts of unstructured or semi-structured data. NoSQL databases provide various data models, including document, key-value, wide-column, and graph, each suited for specific use cases.
MongoDB is a popular NoSQL database that employs a document-oriented data model. Documents are stored as JSON-like objects, allowing for flexible data structures and easy integration with modern web applications. MongoDB is known for its scalability, performance, and ease of use, making it a popular choice for various applications, including e-commerce, social media, and content management.
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What is mongod ?
mongod
is the primary daemon process for the MongoDB system. It handles data requests, manages data access, and performs background management operations. -
Which are the different languages supported by MongoDB?
MonggoDB provides official driver support for C, C++, C#, Java, Node.js, Perl, PHP, Python, Ruby, Scala, Go and Erlang.
You can use MongoDB with any of the above languages. There are some other community supported drivers too but the above mentioned ones are officially provided by MongoDB.