what are value table and check table ?and what are the
difference between them?
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Answer Posted / sai krrishna
Check Table: The ABAP Dictionary allows you to define
relationships between tables using foreign keys . A
dependent table is called a foreign key table, and the
referenced table is called the check table. Each key field
of the check table corresponds to a field in the foreign
key table. These fields are called foreign key fields. One
of the foreign key fields is designated as the check field
for checking the validity of values. The key fields of the
check table can serve as input help for the check field.
Value Table: Prior to Release 4.0, it was possible to use
the value table of a domain to provide input help. This is
no longer possible, primarily because unexpected results
could occur if the value table had more than one key field.
It was not possible to restrict the other key fields, which
meant that the environment of the field was not considered,
as is normal with check tables.
In cases where this kind of value help was appropriate, you
can reconstruct it by creating a search help for the data
elements that use the domain in question, and using the
value table as the selection method.
Check table will be at field level checking.
Value table will be at domain level checking ex: scarr
table is check table for carrid.
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