How to Connect to Cassandra Database

The connection dialog is explained here.

How to Configure the Cassandra JDBC URL

DbSchema connects to Cassandra using its own JDBC driver which calls the native Cassandra driver. The DbSchema driver is open source and can be found at

The default DbSchema connection dialog shows an option to connect only to a single host. To connect to multiple hosts use the 'JDBC URL' tab and edit a string like here:


Find the DataCenter using 'nodetool status' or 'nodetool -h ::FFFF: status'.

This will be translate an URL like jdbc:cassandra:// into:

Cluster cluster = Cluster.builder().addContactPoint("").withPort(9042).build();
Session session = cluster.connect("mykeyspace");

How to configure the Cassandra JDBC URL and connect to the database

Connect using SSL

Edit the DbSchema.vmoptions file (in the DbSchema installation folder or ./ on Mac OS) and add this parameters:
# If you're using client authentication:

How to Enable Remote Connections for Cassandra on Windows

To enable remote connections you will have to edit the cassandra.yaml file from C:\Program Files\DataStax Community\apache-cassandra\conf

How to edit Cassandra configuration file and allow remote connections
set the
  • start_rpc: true
  • rpc_address: your_ip
  • cdc_raw_directory: "C:/Program Files/DataStax-DDC/data/cdc_raw"
The 'cdc_raw_directory' does not exist in the default configuration file. Cassandra server 3.9 didn't start without adding it. Look in DataStax-DCC/logs for errors.
Setup Cassandra rpc_address
Go to -> Control Panel\System and Security\Administrative Tools -> Services -> Restart service. DataStax DDC Server 3.9.0 .
How to restart the DataStax service on Windows
Cassandra databases talk to each other using a different protocol on a different port. These two can not be the same and gives us some extra configuration. Cassandra Default ports:
- 9042 Cassandra client port.
- 9160 Cassandra client port (Thrift).

How to Install Cassandra on Windows

Cassandra can be installed on Windows from After installation go to installation folder: C:\Program Files\DataStax Community\apache-cassandra\conf and enable remote connections as in the previous chapter.

From Windows menu you can start DataStax Dev Center and connect to the installed Cassandra:
How to install Cassandra on Windows
To execute a command select first a connection in the top menu.

WITH REPLICATION = { 'class' : 'NetworkTopologyStrategy',
'datacenter1' : 3 } AND DURABLE_WRITES = false;

CREATE TABLE sample.table1 ( id int primary key, name text);


CREATE TYPE sample.flagtype (data map<text,text>,working text);

CREATE TABLE sample.table1a (abc text,
                   hello text,
                   flag frozen<flagtype>,
                   PRIMARY KEY (abc));

INSERT INTO sample.table1a JSON '{"abc":"abc", "hello":"world", "flag":{"data":{"hi":"cassandra"}, "working":"no"}}';