# Prerequisites

The following topic describes the prerequisites for using Snowflake as a Qlik Replicate source endpoint.

## Driver prerequisites

Qlik Replicate for Windows:

Download and install Snowflake ODBC driver 3.5.0 (64-bit) or later for Windows on the Qlik Replicate Server machine.

Qlik Replicate for Linux:

Download and install Snowflake ODBC driver 3.5.0 (64-bit) or later for Linux on the Qlik ReplicateServer machine.

Information note

The expected name for the ODBC driver is **SnowflakeDSIIDriver** (the default).

## CDC prerequisites

The following section describes the prerequisites for capturing changes from Snowflake tables.

CHANGE\_TRACKING=TRUE must be enabled for each table or view that you want to capture changes from.

For views, CHANGE\_TRACKING=TRUE must be enabled on all underlying tables as well. For information on how to set CHANGE\_TRACKING=TRUE, see [ALTER TABLE](https://docs.snowflake.com/en/sql-reference/sql/alter-table).

## Firewall prerequisites

Firewall port 443 needs to be opened for outbound communication.