How to populate values in drop down from select query on other dropdown?
<p>How can i populate the values in the drop down(second drop down) from the select query on choosing
the option from the first drop down ?</p>

<p>Examples:
First Drop Down : Listing out all the "department name" using select query.
Second Drop Down : Now, i need the output to list out all the "professors name" in the respective departments on the basis of the first drop down option.</p>

<p>Thanks in advance. Much Appreciated your help.</p>
