Mysql: Support Transactions

<font color=#0000B3>



<h2> Transactions:</h2> Not all table types support transactions. BDB and INNODB type do support transactions.
Assuming the server has NOT been started with --skip-bdb or --skip-innodb the following should work:

mysql> create table tran_test (a int, b int) type = InnoDB;
mysql> begin;
mysql> insert into tran_test (a,b) values (1,2);

mysql> select * from tran_test;
select * from tran_test;
+------+------+
| a | b |
+------+------+
| 1 | 2 |
+------+------+
1 row in set (0.00 sec)

mysql> rollback;

mysql> select * from tran_test;
select * from tran_test;
Empty set (0.00 sec)


Summary: rollback undoes everything and commit will save.
</font>