check table and value table

[Former Member]

hi

friends

i want to know what is the difference bet check table and value table .

[Former Member]

check table is validation at field level.

value table is at domain level.

Value table is defined at the domain level and is used to provide F4 help for all the fields which refer to that domain.

Check table is defined against a field in SE11 if you want the values in that field to be checked against a list of valid values. For e.g. if you are using the field matnr in a table you could define MARA as the check table.

Also while defining a check table SAP proposes the value table as check table by default. Referring to the previous example if you tried to define a check table for the matnr field SAP would propose MARA as the check table.

1. what is the purpose / use ?

-- so that the user can select values

from some master table , for that field !!!!

2. This is done by

CHECK TABLE (foreign key concept)

(and not value table)

3. When we create a check table for a field,

then

some DEFAULT table is PROPOSED

4. that DEFAULT table is nothing

but PICKED up from the domain of that field,

and shown from the value of VALUE TABLE.

CHECK TABLE -it is a parent table.

for example..

i have two tables ZTAB1 and ZTAB2.

I have one common field in both the tables,i can make any ztable to be the check table .If i make Ztab1 to be the check table then when i have to make an entry in ztab2 i will check whether ztab1 is having that value or not..

its also field level checking..

Valuetable-It is nothing but default check table.

one parent can have n number of child tables.For example

For ztable we have zchild1 and zchild2 tables r there.

Its domain level checking..When zchild2 uses the same domain as used by zchild1 then the system automatically generates a popup saying a check table already exists would u want to maintain it.

go to domain and then press the value tab u can see the valuetable at the end...

Please refer the links below,

http://www.sap-img.com/abap/difference-between-a-check-table-and-a-value-table.htm

regards,

srinivas

<b>*reward for useful answers*</b>

[paruchuri_nagesh]

both check and value table are for validation purpose

but in case of check table user has to create relation ship explicitly

and also table doesnt allow values which are not exist in check table

in case of value table :

value table defines in domain whenever field refer to this domain value table in domain can be referred as check table no need to define relation ship explicitly

it provide f4 help only doesnt restrict user to enter those values whic exists in value table

reward if u find use ful

regards

Nagesh.Paruchuri

[Former Member]

Hi,

Difference between a check table and a value table

Value Table

This is maintained at Domain Level.

When ever you create a domain , you can entered allowed values. For example you go to Domain SHKZG - Debit/credit indicator. Here only allowed values is H or S.

When ever you use this Domain, the system will forces you to enter only these values.

This is a sort of master check . To be maintained as a customization object. This mean that if you want to enter values to this table you have to create a development request & transport the same.

Check table

For example you have Employee master table & Employee Transaction table.

When ever an employee Transacts we need to check whether that employee exists , so we can refer to the employee master table.

This is nothing but a Parent & Child relationship . Here data can be maintained at client level , no development involved.

As per DBMS what we call foregin key table, is called as check table in SAP.

There is 1 more important Difference in Value Table and Check Table is that:

1. The contents of the check will be used as an input help(F4 Help) for a particular field on which a check table is assigned.

But the contents of Value Table are never used in Input Help.

The Heirarchy which decides from where to used the Input Help is:

1. Input help defined explicitly in ABAP Program or Dialog Module.

2. Input Help Attached to the referenced Database Table field.

3. Using the contents of Check Table as an input help if neither (1) or (2) help are there.

4. Input help from Fixed value or Value range given in Domain.

reward if it helps..

Regards,

Omkar.

[Former Member]

thanks