What is a NoSQL Database?
NoSQL is a non-relational database used to store different types of unstructured data. It is a language to store and read the data.
It is generally used to classify with below characteristics
- Non-Relational Data
- Schemaless
- Cluster friendly for scalable
- 21st-century databases to store unstructured data generated from Twitter, IoT,eCommerce and social networking sites
Difference between SQL and NoSQL Databases?
SQL is a Query language used to save, insert, and update relational data into the database. NoSQL is a query language to save and update non-relational data.
Following is a comparison of SQL and NoSQL.
| Procedure Language | Object-Oriented Language |
|---|---|
| Contains Procedure | Contains Methods |
| Records | Objects |
| Modules | Classes |
Types of NoSQL Databases
NoSQL databases are categorized as per data models, These are optimized for performance and scaling of any type of data.
- Key value Databases:
- Document Oriented Database Example Document Orie
- Graph Database
- In Memory Databases
- Column Family Database Store
- Search Index
Nosql database example
Following are list of NoSQL databases with examples
| Type | Database Example |
|---|---|
| Key- Value | Amazon DynamoDB,Redis |
| Document Oriented Database | MongoDB, CouchDB |
| Graph Database | Neo4j,InfoGrid |
| Column Store | HBase, Cassandra |
| In memory | EhCache |
| Searching | Solr, Elastic Search |
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