Fujitsu UDS/SQL V2.5 사용자 설명서
Linking record types
Schema DDL
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U929-J-Z125-9-76
Example 3
The MANUAL option is used in cyclic data structures, i.e. a number of record types are
connected in such a way that each record type is at the same time owner of one set and
member in another.
connected in such a way that each record type is at the same time owner of one set and
member in another.
Figure 20: Type of set membership in a cycle
If all sets of a cycle were defined as AUTOMATIC, it would be impossible to store a record
of this cycle in the databases, as the AUTOMATIC option requires that the owner of a record
to be stored already exists in the database.
of this cycle in the databases, as the AUTOMATIC option requires that the owner of a record
to be stored already exists in the database.
MANUAL
AUTOMATIC
AUTOMATIC