Difference between data and types

dear friends
       Its a very simple question i am confused with why we create structures with types where we can create structures with data as well :
Types: begin of stru
end of stru.
Data: begin of stru
end of stru...
regards
Naim

To construct a new structured data type struc_typein a program, you use several TYPES statements:
TYPES BEGIN OF struc_type.
  {TYPES dtype ...} | {INCLUDE {TYPE|STRUCTURE} ...}.
TYPES END OF struc_type.
The syntax for directly declaring a variable as a structure is the same as you would use to define a structured data type using the TYPES statement:
DATA BEGIN OF struc.
  {DATA comp ...} | {INCLUDE {TYPE|STRUCTURE} ...}.
DATA END OF struc.
The individual components of a structure are addressed in the program with the structure component selector between the structure name and component name as follows: struc_comp.
Have a look at below link.
http://help.sap.com/saphelp_nw2004s/helpdata/en/fc/eb3364358411d1829f0000e829fbfe/content.htm
I hope it helps.
Best Regards,
Vibha
*Please mark all the helpful answers

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