- Mongo DB is a document oriented database, It falls under the NoSQL Database.
- It is an open source product and developed by 10gen Company.
- 10gen created mongo DB at 2007, version 1.7 was introduced in 2010.
- It is a general public and commercial license.
- Mongo DB is scalable and high performance than RDBMS.
- It provides less functionality but more performance.
- RDBMS store data in table, but in Mongo DB it will be in collection.
- RDBMS has different schema called user. We can create many objects like – views, sequence, index etc…
- Mongo DB use document oriented query language for NoSQL
- Ex:- to search a record: db.student.find({rno:01});
- Ex:- searching all records by name: db.student.find().sort({name:Ram});
- Features:
- Support regular expression range
- Index
- Replication
- Duplication of data
- Load balancing
- Scalable
- Aggregation
- File storage function grid
- Map Reduce can be used for batch processing of dataand aggregation operation.
- RDBMS require conversion for converting relational database into object oriented programming language, but NoSQL does not require for conversion.
- It can be used for
- Big data application
- Traditional application
But not use for complex transaction.
Example of Mongo DB Query Language:
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