Glossary

border

The number of character spaces around the perimeter of each record block in the data structure diagram. A minimum border of two character spaces is needed for set connections and arrows; the maximum is 50 character spaces. A two-character border puts at least four character spaces between any two record blocks.

column header

A page with an easily recognized format that you use as a reference to burst and align pages for wallpapering the CA IDMS Schema Mapper data structure diagram. Column headers separate each column of the diagram when it is printed out on successive pages.

coordinate position

A combination of two numbers, which appears in the Cross-Reference Report, that is used to find the exact location of a record block in a CA IDMS Schema Mapper diagram. The numbers refer to the position of the upper left corner of each record block in the diagram. The position is numbered in units of character spaces, with the upper left corner of the diagram being the origin (0,0). The first number tells how many character spaces the record block is from the left side of the diagram. The second number tells how many character spaces the record block is from the top of the diagram.

Cross-Reference Report

A report that contains the descriptions of sets, the name of each record, and location (coordinate position and page identifier) of each record block in the CA IDMS Schema Mapper data structure diagram. The report includes the name and unique set number of each set and index in the diagram. And it contains the names and locations, in the diagram, of the OWNER and MEMBER records of each set.

data structure diagram

A graphic representation of a CA IDMS schema or subschema.

format

The textual content and textual organization of record block, set, and index information in the Cross-Reference Report or in the CA IDMS Schema Mapper data structure diagram. Also, the graphic components of the diagram, such as the characters used to draw record blocks, set connections, and arrows. You can control the format with the optional OPTIONS, CHARDEF, DRECLINE, XRECLINE, DSETLINE, and XSETLINE statements; or CA IDMS Schema Mapper's default format specifications can determine all or part of the format.

index

An index is represented by a uniquely numbered diagonal line, extending from a record block, in the CA IDMS Schema Mapper data structure diagram. (See set number.) Indexes are also listed in the Cross-Reference Report.

layout

The arrangement of record blocks, sets, and indexes in a CA IDMS Schema Mapper data structure diagram. You can control the layout with the optional LOCATE parameter statement. CA IDMS Schema Mapper always does some amount of layout, by at least drawing set connections. CA IDMS Schema Mapper does complete automatic layout of all record blocks, sets, and indexes in the CA IDMS Schema Mapper data structure diagram, except when you manually position record blocks using LOCATE statements.

page identifier

A unique two-character (alphabetic) identifier that specifies the position of a (paper) page in a CA IDMS Schema Mapper data structure diagram. The first character identifies the page's column (which runs down the length of the diagram), and the second character identifies the page's row (which runs across the width of the diagram). The page identifier appears in the upper right corner of each page in the diagram and also next to record names in the Cross-Reference Report. The page identifier is useful as a reference when assembling the CA IDMS Schema Mapper data structure diagram and when looking for a record block in a diagram.

parameter statements

Statements used to specify parameters for an execution of CA IDMS Schema Mapper. The PROCESS parameter statement is mandatory. Any number of the optional statements--OPTIONS, CHARDEF, DRECLINE, XRECLINE, DSETLINE, XSETLINE, INCLUDE, and LOCATE--can also be used.

record block

A representation of a CA IDMS record in a CA IDMS Schema Mapper data structure diagram. Record block descriptions can also be listed in the Cross-Reference Report. A record block contains various record fields. CA IDMS Schema Mapper supplies default format specifications. To tailor the data structure diagram you can use the optional DRECLINE statement. Use the optional XRECLINE statement to select and organize the record field information to be included in the Cross-Reference Report.

set

A group of record blocks that represent a CA IDMS set and are connected to one another with set connection lines in the CA IDMS Schema Mapper data structure diagram. Each set is numbered in the diagram with a unique set number. Sets are also listed, with their descriptions, in the Cross-Reference Report. Default format specifications are supplied for set appearances in the Cross-Reference Report and the data structure diagram. You can select and organize the fields to be included in the sets in the data structure diagram by using the optional DSETLINE statement, and in the Cross-Reference Report, by using the optional XSETLINE statement.

set connection

A physical line or series of lines, each with an arrow at the end that points toward a member of a set in the CA IDMS Schema Mapper data structure diagram. Set connections connect an owner of a set and its members.

set junction character

An uppercase letter O is used at a junction where a multi-member set connection line splits into more than one line.

set number

A unique number assigned by CA IDMS Schema Mapper to identify each set and index in a schema or subschema. Set numbers appear in the CA IDMS Schema Mapper data structure diagram as part of set connection lines and index lines. For multi-member sets, the set number appears in the diagram next to the owner and each member. Set numbers are cross-referenced in the Cross-Reference Report.

tailored diagram

A data structure diagram as it appears after you have used at least one optional CA IDMS Schema Mapper parameter statement to modify the layout or format of the diagram that is generated by default (use of the PROCESS statement only).

Transfer File

An output file that reflects the layout and format of a CA IDMS Schema Mapper data structure diagram. The Transfer File contains parameter statements. You can use it as a time-saving device, as input, when recreating or modifying a CA IDMS Schema Mapper data structure diagram.

wallpapering

The process of bursting and assembling a CA IDMS Schema Mapper data structure diagram and (probably) hanging it on a wall for viewing.