Apache Cassandra

* Cassandra NOSQL

Cassandra is the leading open-source NoSQL distributed database management system(DBMS). In contrast to traditional SQL DBMS like Oracle or SQL Server, NoSQL databases follow a different storage model. While in SQL systems data is organized in tables and columns that are driven from fixed schemas, in Cassandra a fixed schema is not enforced, a dynamic number of columns within the same table(or column-family as a table is often called within Cassandra) is allowed as well as being able to handle and store unstructured data. In addition to the above, the language which is used to interact with Cassandra is a variant (and subset) of the traditional SQL, called Cassandra Query Language(CQL).

** setting up Cassandra

It is a open source DBMS. You can download Cassandra officially from its own site. Before installing the DBMS, have java 8 and python >2.7 installed in your pc. Install the tar.gz extension file for Cassandra (this link). Unzip the tar file .

name >> CASSANDRA_HOME path >> ..C/cassandra…(path for cassandra) ~ C:\Cassandra\apache-cassandra-4.0.3set path .. 
click in path and add new path similar to ~
C:\Cassandra\apache-cassandra-4.0.3\bin
cassandra# the terminal can be accessed using 
cqlsh

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