HP System Dictionary/XL General Reference Manual Vol 2 - Part 1 SDINIT (32256-90005)

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CLASS-FILE. This data set relates Inform/IMAGE classes to files. The FILE field in this data set is used
to obtain the type of the file, which determines the relationship to map. The following table shows the
variety of relationships that can map to entries of this data set:
Note the following:
1 The IMAGE-DATABASE contains IMAGE-CLASS relati onship may have already been created
when DATA-CLASS was mapped. (See the "Data-Class" section under "Loading Entities".) In that
case, no new relationship is created.
2 In these cases the file's lockword is initialized with the CLASS-PASSWORD field value in DATA-
CLASS.
Entries in the data set are retrieved through chain ed read on CLASS. The fields are mapped according to
the following table:
Notes
1 As explained above, if the fil e type is IMAGE-DATABASE or IMAGE-DATASET, the value in this
field is used as the IMAGE-CLASS name. Otherwise, this field is not mapped.
2 The value of this field is used to search DATA-FILE. Then, the file type found in the DATA-FILE
DESCRIPTION-KEY description attribute
POSITION Not mapped
file type relationship to map
BASE IMAGE-DATABASE contains IMAGE-CLASS*1
MAST
AUTO
DETL
IMAGE-DATASET contains IMAGE-CLASS
KSAM
MPEF
MPER
VPLS
No relationship.*2
CLASS See note 1
FILE See note 2
FILE-ACCESS access attribute*3
DATA-CREATE Not mapped. See DATA-ELEMENT.
DATE CHANGE Not mapped. See DATA-ELEMENT.
IDENTITY-CREATE scope-owner attribute
IDENTITY-CHANGE Not mapped. See ELEMENT-ELEMENT.
DESCRIPTION-KEY description attribute
POSITION Not mapped