Getting relation between infotype IT0007 and table T550A

Hi experts,

My requirement is as follows. For an employee work schedule rule(field SCHKZ) is maintained in the table IT0007. For every work schedule rule there is start of planned work time( SOBEG ) and end of planned work time(SOEND) in the table T550A.

Can anybody please help me in getting a relation between these two tables.

Thanks,

Manasa.