ABAP /4 and ABAP OO difference on R/3 and ECC 6.0

Hi Gurus,
Can any one tell me if ABAP/4 code behaves differently on R3 than ECC6.
I know in BW all the routines written with ABAP/4 must be converted manually to ABAP OO(object oriented), is it the case for ERP too?
A quick response will be greatly appreciated.
thanx
intruder.

Hi intruder,
you can check the sap note 367676.
if helpful rewards points are appreciated

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Major and minor Functional difference between 4.6c and ecc 6 in SD module

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Will anyone will mail me doc or url that shows the Major and minor Functional difference between 4.6c and ecc 6 in SD module. Mail me at [email protected]
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hai
can any one say the differences between Data type and Data Object.
And also differences between TYPE and LIKE
thanks
Gani

hi,
_Data Types and Data Objects_
      Programs work with local program data that is, with byte sequences in the working memory. Byte sequences that belong together are called fields and are characterized by a length, an identity (name), and as a further attribute by a data type. All programming languages have a concept that describes how the contents of a field are interpreted according to the data type.
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Data Types
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Data types can be divided into elementary, reference, and complex types.
a. Elementary Types
These are data types of fixed or variable length that are not made up of other types.
The difference between variable length data types and fixed length data types is that the length and the memory space required by data objects of variable length data types can change dynamically during runtime, and that these data types cannot be defined irreversibly while the data object is being declared.
Predefined and User-Defined Elementary Data Types
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b. Reference Types
Reference types are deep data types that describe reference variables, that is, data objects that contain references. A reference variable can be defined as a component of a complex data object such as a structure or internal table as well as a single field.
c. Complex Data Types
Complex data types are made up of other data types. A distinction is made here between structured types and table types.
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Declaring Data Objects
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a. Literals
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d. System-Defined Data Objects
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What is the difference between Type and Like?
Answer1:
TYPE, you assign datatype directly to the data object while declaring.
LIKE,you assign the datatype of another object to the declaring data object. The datatype is referenced indirectly.
Answer2:
Type is a keyword used to refer to a data type whereas Like is a keyword used to copy the existing properties of already existing data object.
Answer3:
type refers the existing data type
like refers the existing data object
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full points for helpful answer
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conti
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http://www.sap-img.com/abap/difference-between-sap-and-abap-memory.htm
http://www.sap-img.com/abap/type-and-uses-of-lock-objects-in-sap.htm
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http://www.geocities.com/SiliconValley/Campus/6345/set_para.htm
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http://www.geocities.com/SiliconValley/Campus/6345/get_para.htm
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