Introduction

Introduction to CQL and data modeling.

Cassandra Query Language (CQL) enables you to communicate with DataStax Distribution of Apache Cassandra™ (DDAC) and create database tables, manipulate data, and perform other activities. CQL has a similar syntax to SQL.

In this document, you will perform these tasks:

• Learn to retrieve data using the CQL SELECT statement.
• Begin learning about Cassandra data modeling and how it differs from relational database modeling. A data model is used to define the database tables, and the tables are created using CQL.
• Use CQL statements to create and drop database keyspaces and tables.
• Insert, retrieve, update, and delete data.