You can position a table using a CGRect
and setting it to the UITableView's
frame property.
Here's a rough example:
CGRect someFrame = CGRectMake(<x coordinate>, <y coordinate>, <width>, <height>);
myTableView.frame = someFrame;
I'm not clear on what buttom and top means to your application. Do you mean at the bottom of its container? Bottom of the entire screen?
If you want it at the bottom of its container, then you could do this to calculate a new y position:
CGFloat yPos = myTable.superview.frame.size.height-myTable.frame.size.height;
EDIT
As @robmayoff suggests, the table is sized to fit the cells. Simply make the height of your tableview to be 44.0*3 (default height of cell x 3 cells) and modify its y position using the above example.