Engineering Data Support

Appendix A. How to use the charts

Two chart formats are used in this manual:

• Database access chart

  This chart lists the databases accessed by a program and describes the mode of access.

• Screen or report field/database field cross-reference chart

  This chart lists the database, including the segment and segment field name, that corresponds to the field shown on the screen or report.

Database access chart

The following format is used to describe the database segments accessed by online and batch programs:

Database	Segment	Segment Description	Mode
PRDEFDB	ITEMID	Item identification	R/O

Database

Shows the internal name by which the database is known

Segment

Shows the internal name of the database segment accessed by the program

Segment Description

Shows a short description of the database segment

Mode

Shows the mode of access It can be one of the following:

R/O

Read only access

R/W

Read/Write access. This can include any of the DL/I functions GET, INSERT, REPLACE, or DELETE.

Screen or report field/database field cross-reference chart

The following format is used to describe the contents and source of displayed data fields:

Screen Field Name	Description	Database Field	Segment Name	Database Name
ITEM NO	Item number	MITEM	ITEMID	PRDEFDB

Screen (Report) Field Name

Shows the name of the field displayed on the screen or report

Description

Shows a short description of the screen or report field

Database Field Name

Shows the internal name of the database segment field that corresponds to the screen or report field

Segment

Shows the internal name of the database segment that contains the database field

Database

Shows the internal name of the database containing the database segment