I have one MS SQL DB (very big) and MySQL. I must move data from MS SQL DB to MySQL by doing SQL. It mean that source data & destination data arenot same structure. When source data is updated, the updating is reflected into destionation. Please give me an advice which is the suitable way?  

1. Using SSIS
2. Using store procedure & write my own script
3. Other way.

Any advice is highly appreciated.