Technical data

set
A defined relationship among records in a database. A set contains an owner
record and zero or more member records. See also set occurrence , set type, and
empty set.
set member
A record stored in the database as a nonowner participant in a specific set.
set-name
A user-defined word that identifies a set type.
set occurrence
An instance of a database set type. A set occurrence is the actual data in the set,
not its definition, which is the set type.
set-ordering criteria
The specification for the positioning of a member record in a set by the DBCS.
The schema defines this specification.
set owner
A database record occurrence whose existence establishes the existence of a
specific set occurrence.
set type
A specific named set that has been defined in the schema data definition
language. It is the definition of a collection of sets that have identical
characteristics. Set types are declared by the schema data definition language.
set type currency indicator
A currency indicator associated with a particular database set type. A set type
currency indicator identifies a particular set of the set type and a particular
record, position in that set, or both.
simple condition
Any single condition from the following list:
relation condition
class condition
condition-name condition
switch-status condition
sign condition
success/failure condition
simple-condition (in parentheses)
tenancy condition (Oracle CODASYL DBMS simple condition type)
empty condition (Oracle CODASYL DBMS simple condition type)
database key condition (Oracle CODASYL DBMS simple condition type)
singular set
See SYSTEM-owned set.
storage schema
A description of the physical storage of data in database files. The storage
schema is written using the storage schema data definition language.
Glossary–8