I think it's about MySQL query, is'n it ?
Yes right, more than just one,two, or more mysql query could be execute in just one single webpage.
... event query in the same table
for ex :
mysql_query("INSERT INTO table1 (name,email) VALUES ('ridwank','my@mail.com')");
mysql_query("INSERT INTO table1 (name,email) VALUES ('jerry','jerry@mail.com')");
mysql_query("UPDATE table1 SET email='your@mail.com' WHERE name='ridwank'");
mysql_query("DELETE FROM table1 WHERE name='jerry'");