I have produced my very own theme using HTML, CSS, JS which consists of FORM (Emp_ID,Emp_Title, Address etc) . It's database connectivity with MySql. I have written database connectivity in PHP using simple PHP script and MySql query. I will convert this theme in to the wordpress theme but wondering using my MySql database in wordpress. Can anybody show me the fundamental and good way to get it done. Knowing any easy available tutorial, please tell me. Any assistance is appreciated. Thanks ahead of time. Cheers ... :(

this page may help otherwise you can easily make use of your same code to have interaction using the wordpress database killing wordpress's techniques. (though you need to be carefull to avoid sql injection etc via your form, while you wont possess the investments from the wordpress db techniques)