Answer / ashutosh rai

A field string is a type of variable, and is the equivalent
of a structure in the DDIC but is defined within an ABAP/4
program. Like a structure, a field string is a series of
fields grouped together under a common name. The difference
lies mainly in where the definition resides. The term
structure in R/3 applies only to a Data Dictionary object
containing a collection of fields. The term field string
applies to a collection of fields defined in an ABAP/4 program.

Two statements are usually used to define field strings in
an ABAP/4 program:

* data
* tables

The following is the syntax for defining a field string
using the data statement.

data: begin of fs1,
f1[(l)] [type t] [decimals d] [value 'xxx'],
f2[(l)] [type t] [decimals d] [value 'xxx'],
...
end of fs1.

Answer / kartikeya bommuluri

Field strings are a special form of dynamic string, which
have all the capabilities of a dynamic string, but may also
represent a defined part of a random file buffer or a
defined part of a dynamic string.

Field strings must always be declared using LOCAL.They may
be used in the same manner as a dynamic string variable, or
they can be bound to a file buffer for an open random-
access file or a dynamic string using a corresponding FIELD
statement. Each field string occupies sixteen bytes of
memory, and requires slightly more general overhead than a
regular dynamic string variable

The TABLES statement automatically defines a field string .
they are mainly used in screen painter.

Answer / amith

Field Strings can be used as work areas.
They are similar to structures
We can use field strings In reports .

Field strings can be defined both using the DATA and Tables
statement

in a report there is two options for each there is a seperate alv reportt. how to have form top-of-page for both in same report.

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How collect statement is different from append?

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