Answer Posted / mansi

Internal table is declared by many ways:

(A)
Data : BEGIN OF IT_TAB occurs 10,
RNO(4) TYPE N,
SNAM(45) TYPE C,
END OF IT_TAB.

(B)
TYPES : BEGIN OF tT_TAB,
RNO(4) TYPE N,
SNAM(45) TYPE C,
END OF tT_TAB.

DATA : tT_TAB TYPE STANDARD TBLE OF tT_TAB with header line.

(C)
TYPES : BEGIN OF tT_TAB,
RNO(4) TYPE N,
SNAM(45) TYPE C,
END OF tT_TAB.

DATA : iT_TAB TYPE STANDARD OF tT_TAB.

(D)
DATA : BEGIN OF IT_TAB,
RNO(4) TYPE N,
SNAM(45) TYPE C,
END oF IT_TAB.

DATA : wa_TAB LIKE LINE OF IT_TAB,
wa_TAB TYPE OF IT_TAB

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