link tables to update data automatically

I have a worksheet with one large table (basically a "master" table), which is also broken down into 7 smaller tables on the same sheet. I want to be able to enter data into the large "master table", and have it automatically enter the same data into the smaller (duplicate) tables. How can I set that up ? Is it a matter of "linking" the tables? If so, how do I do that?
Thanks, Katie