Using a Connection String

For some applications, you might need to use a connection string to connect to your data source. For detailed information about how to use a connection string in an ODBC application, refer to the documentation for the application that you are using.

The connection strings in the following sections are examples showing the minimum set of connection attributes that you must specify to successfully connect to the data source. Depending on the configuration of the data source and the type of connection you are working with, you might need to specify additional connection attributes. For detailed information about all the attributes that you can use in the connection string, see Driver Configuration Options on page 1.

DSN Connection String Example

The following is an example of a connection string for a connection that uses a DSN:

[DataSourceName] is the DSN that you are using for the connection.

You can set additional configuration options by appending key-value pairs to the connection string. Configuration options that are passed in using a connection string take precedence over configuration options that are set in the DSN.

DSN-less Connection String Examples

Some applications provide support for connecting to a data source using a connector without a DSN. To connect to a data source without using a DSN, use a connection string instead.

The placeholders in the examples are defined as follows, in alphabetical order:

• [BundlePath] is the full path and name of the secure connection bundle associated with your Astra database
• [PortNumber] is the number of the TCP port that the server uses to listen for client connections.
• [Server] is the IP address or host name of the Cassandra or Astra server to which you are connecting. You can specify a comma-separated list of servers.
• [YourPassword] is the password corresponding to your user name.
• [YourUserName] is the user name that you use to access the server.

Connecting to a Cassandra Server Without Authentication

The following is the format of a DSN-less connection string for a Cassandra server that does not require authentication:

For example:

Connecting to a Cassandra Server Requiring Authentication

The following is the format of a DSN-less connection string for a Cassandra server that requires authentication:

For example:

Connecting to an Astra Server

The following is the format of a DSN-less connection string for an Astra server:

For example: