What is the structure of the BDC table?

The BDCDATA consists of the following fields:

PROGRAM [CHAR 40] - Online program name.

DYNPRO [NUMC 4] - Screen number.

DYNBEGIN [CHAR 1] - Flag to indicate the start of a new screen.

FNAM [CHAR 132] - Field name of a screen field to be filled with data.

FVAL [CHAR 132] - The actual value to be filled into the specified screen field.