The first stage in building a KDD stream is to specify the name of the database or text file from which the data will be read. A database is added into a project using the data source node. This tutorial will be using the Customer Response.csv text file to load the database.
Select the data source node
button from the main toolbar. This switches WITNESS Miner into create
mode (indicated by a small
symbol attached to the cursor).
Click anywhere on the main workspace to create the data source node at that position. The node will also be added to the project tree as the root of a new KDD stream.
WITNESS Miner assigns the default name of DataSource1 to the node. You can change the node's name if you wish: right-click on the node in the workspace or project tree to display the context menu, then select the rename command.
The workspace should now look like this (assuming that you have not renamed the data source node):

Double-click on the data source node to bring up the options
dialog box. Alternatively, select the edit
command from the node's context menu.
Use the first Select... button to browse for the customer response data file. The file should be installed in the sample files directory:
\Program Files\WITNESS Miner 2.0\Sample Files\Customer Response.csv"
Once you have selected the file, the filename will appear in the data
source options dialog.
Click OK to close the file options dialog box.