topic Re: wat is the difference between Data and types in Application Development and Automation Discussions

wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:32:54 GMT

Wat is the diff between DATA and TYPES

EX:

Data A type I

Types A type I

And In which case do we use the Above mentioned Data types.

Message was edited by:

Ravi Kumar B

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:39:14 GMT

http://help.sap.com/saphelp_nw2004s/helpdata/en/fc/eb2ff3358411d1829f0000e829fbfe/content.htm

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:39:14 GMT

when u declare like

Data A type I

then u can use variable A directly and populate it with any integer.

But when u use

Types A type I

then u need to declare a variable of that type n then only u can use it in program

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:41:22 GMT

The statement DATA declares a variable of any data type. The declared data object is visible within the current context as of this position. Within the declaration part of a class or an interface, DATA declares an instance attribute whose validity is bound to an instance of a class

The syntax of the DATA statement corresponds to the syntax of the TYPES statement, with the exception of two additions. In this way, a new data type can be defined during the declaration of a data object. The most important difference compared with the statement TYPES is that a data type defined using DATA - not derived from an existing type - is available only as a property of the declared data object and is not independent. This kind of data type is bound to its data object.

Data objects that are declared in a program, but are not accessed there statically, cause a warning message in the enhanced program check.

The TYPES statement defines either an independent data type dtype or a structured data type struc_type. The naming conventions apply to the names dtype and struc_type. The defined data type can be viewed within the current context from this position.

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:41:49 GMT

The data statement will allocate some memory to the variable and can store a value.

Type is only a structure definition. Using a type you can declare data.

TYPE : abc type i.

DATA: def type abc.

This will work just like

DATA: def type i.

Re: wat is the difference between Data and types

ashish_gupta11 — Mon, 29 Oct 2007 06:42:20 GMT

Hi Ravi,

As you know abap is based on oops concept .so with data statement this create a data object for program which give help to call anything in program.

and types define the data type which is local for program.

thanks ,

Ashish

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:42:58 GMT

Hi,

->User-defined elementary data types are based entirely on predefined elementary data types.

->To define your own elementary data types, you use the TYPES statement.

reward points if useful.

regards,

Vinod Samuel.

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:44:57 GMT

Hi ravi,

Types is actually used to create a user-defined type of data type and Type is used to refer existing data type.

Data Declarations is used to refer a variable or constant using a data type.

Example1:

DATA: v_num type i.

DATA: v_date type sy-datum.

DATA: v_pernr like pa0000-pernr.

Example2:

Types: A type i.

DATA: v_num2 type A.

means that v_num2 is of type i.

Re: wat is the difference between Data and types

Former Member — Mon, 29 Oct 2007 06:45:24 GMT

Hi ravi,

DATA a type i. means u r creating one object. which is of type integer.

for object (a) internally 4 bytes memory allocates..

OBJECTS always declared with data keyword.

TYPES a type i. means u r creating an datatype (a) of type integer.

now (a) also acts like a integer. memory does not allocate for (a).

here both are same : data b type a EQUAL TO data b type i.

Thanks and regards,

Surya