type and like

1. TYPES : BEGIN OF I_VBAK,

VBELN LIKE VBAK-VBELN,

ERDAT LIKE VBAK-ERDAT,

ERNAM LIKE VBAK-ERNAM,

CHECK_BOX TYPE C,

END OF I_VBAK.

2. TYPES : BEGIN OF I_VBAK,

VBELN type VBAK-VBELN,

ERDAT type VBAK-ERDAT,

ERNAM type VBAK-ERNAM,

CHECK_BOX TYPE C,

END OF I_VBAK.

what makes the diffrence here if I declare with type and like.