I m a newbie in MySql. I want to know some basic questions about MySql server login 1. Can several user log in to MySql server using the same account(same user name and password). 2. Does MySql create a different thread/connection for different user logging 3. If each user log in to MySql server using the same account (e.g- user=root), will each one be treated differently with different COnnection. 4. What is new Instance connection? Is a new instance of connection created for each user logging. 5. I made a java application where several users can connect to MySql server using the same account(user=root) and modify the database. Now when each user is using the database, DO I HAVE TO CARE ABOUT DATABASE LOCKING ISSUES? or MySql database do it for me? IF not so, how to do it? PLS HELP ME KNOW THESE ANSWERS.