Follow these steps to add an Attribute Type.

Step 1. Go to the Manage interface of the GNOWSYS instance.
Step 2. Click on Add tab.
Step 3. Click on Attribute Type link. You will be presented with a Add Attribute Type form.
Step 4. Give an Attribute type an id (This is manadatory field) give it a basename (Which is human readable name of the facet and this basename will be used for displaying the links.
Step 5. Select Appropriate Data Type for the Attribute this is also mandatory. Presently supported Data types are Tokens, text, lines, string, boolean, float, long, int. It is possible also to choose the unicode versions, e.g., ulines, utext and ustring. It is always a good practice to use unicode types whatver be your language.
Step 6. Add information to the other fields present in the form these fields are optional and then click on the add button. If everything is correct you will be presented with a confirmation screen.