Mongo DB Interview Questions and Answers

Here you can find Mongo DB Interview Questions and Answers.

Why Mongo DB Interview Questions and Answers Required?

In this Mongo DB Interview Questions and Answers section you can learn and practice Mongo DB Interview Questions and Answers to improve your skills in order to face technical inerview by IT companies. By Practicing these interview questions, you can easily crack any Mongo DB interview.

Where can I get Mongo DB Interview Questions and Answers?

AllIndiaExams provides you lots Mongo DB Interview Questions and Answers with proper explanation. Fully solved examples with detailed answer description. All students, freshers can download Mongo DB Interview Questions and Answers as PDF files and eBooks.

How to solve these Mongo DB Interview Questions and Answers?

You no need to worry, we have given lots of Mongo DB Interview Questions and Answers and also we have provided lots of FAQ's to quickly answer the questions in the Mongo DB technical interview.

Mongo DB Interview Questions and Answers

What is MongoDB?

MongoDB is a cross-platform document-oriented database. Classified as a NoSQL database, MongoDB eschews the traditional table-based relational database structure in favor of JSON-like documents with dynamic schemas, making the integration of data in certain types of applications easier and faster. Released under a combination of the GNU Affero General Public License and the Apache License, MongoDB is free and open-source software.

Mongo DB Interview Questions and Answers

Explain what are the various types of NoSQL databases?

Examples: MongoDB, Cassandra, CouchDB, Hypertable, Redis, Riak, Neo4j, HBASE, Couchbase, MemcacheDB, RevenDB and Voldemort are the examples of NoSQL databases.

Mongo DB Interview Questions and Answers

Explain what is the basic difference between MySQL and MongoDB?

MySQL and MongoDB are both free and open source databases. MySQL and MongoDB have a lot of basic differences in terms of data representation, querying, relationships, transactions, schema design and definition, normalization, speed and performance. By comparing MySQL with MongoDB, we are comparing Relational and non-relational databases.

Mongo DB Interview Questions and Answers

Please compare MongoDB with CouchDB and CouchBase?

MongoDB and CouchDB are both document-oriented databases. MongoDB and CouchDB are the best examples of open source NoSQL database. Aside from both storing documents though, it turns out that they don't share much in common. There are a lot of difference between MongoDB and CouchDB in terms of implementation of their data-model, interface, object storage, replication methods etc.

Mongo DB Interview Questions and Answers

Tell me what makes MongoDB best?

Following features of MongoDB make it best NoSQL database: Document-oriented High performance High availability Easy scalability Rich query language

Mongo DB Interview Questions and Answers

Do you know what is 32 bit nuances?

There is extra memory mapped file activity with journaling. This will further constrain the limited db size of 32 bit builds. Thus, for now journaling by default is disabled on 32 bit systems.

Mongo DB Interview Questions and Answers

Tell me will the journal replay have problems if entries are incomplete (like the failure happened in the middle of one)?

Each journal (group) write is consistent and won't be replayed during recovery unless it is complete.

Mongo DB Interview Questions and Answers

What is role of Profiler in MongoDB?

MongoDB includes a database profiler which shows performance characteristics of each operation against the database. Using the profiler you can find queries (and write operations) which are slower than they should be; use this information, for example, to determine when an index is needed.

Mongo DB Interview Questions and Answers

What is a "namespace"?

MongoDB stores BSON objects in collections. The concatenation of the database name and the collection name (with a period in between) is called a namespace.