Pathmaker Reference Manual

Glossary
067869 Tandem Computers Incorporated Glossary–3
Help text. Online explanations of the use of a screen, the fields on the screen, or the
function keys on the screen. Help text is stored in a set of key-sequenced files called
the help database. Within the Pathmaker product, you can get help text for every
screen by pressing function key F15. The Pathmaker product allows you to create
similar help text for your generated application.
Host language. Any programming language whose statements can be combined with
SQL statements in the same source program. If you are using the Pathmaker product
to generate a Pathway application, the host languages must be COBOL or C.
Host program. A source program that contains statements written in both a host
language and SQL.
Host variables. A variable that is declared in a host program and is referred to by an
SQL statement embedded in the same source program. The Pathmaker product
declares host variables for you after you specify the host variable name in the Logical
File Name column of the Logical File Entries screen.
Initial requester. The first Pathmaker requester that an end user sees when running the
application you created by using the Pathmaker product.
Installation Subvolume (ISV). The subvolume on which the Pathmaker files for this
version reside. Each version of the Pathmaker product has its own projects and its
own copy of Pathmaker software. Versions of the Pathmaker product are identified by
software release number.
Interprocess Communication (IPC) message. A unit of communication between requesters
and servers. In the Pathmaker product, all interprocess communication messages use
a standard header.
Link field. A field used to logically connect information in two files or two
NonStop SQL tables. The link fields must contain related information and must be
identical in length and type. For example, you could use the field that contains the
employee number to link an employee information file and a dependent
information file.
Logical screen. See Screen.
Mapping requester. A requester used at runtime to map services to server classes in the
generated application.
Menu requester. A type of Pathmaker requester that allows navigation to other
requesters and data entry, but does not support transmittal of data to a server.
Occurrence. A single instance of a field or group for which more than one value is
displayed or passed at a time; multiple occurrences of a field or group are created by
using the OCCURS clause in DDL.
Page. All data fields and decorations displayed at one time on the application screen.
A related term in the Pathmaker product is logical screen: a logical screen defines the
locations, lengths, and other attributes of fields displayed on the end user's screen.
While the logical screen is equivalent to the Screen Section of a Screen COBOL