A logical record
(LREC) used with block indexing or B+Tree indexing to locate data
in a subfile. These LRECs are maintained by the TPFDF product and are
not directly accessed from application programs.
TLREC
Technical LREC.
top-level index file
The highest file in an
index structure. The top-level index file can reference a detail file
(lowest level) or an intermediate index file. See also detail
file, intermediate index file, index file.
TPF
Transaction Processing Facility.
TPFDF Distributed Data Access (TPFDF/DDA)
A
feature of the TPFDF product that propagates data from a TPFDF hierarchical
database to a DB2 relational database.
TPFDF recoup
An extension to TPF recoup
phase 1 that allows pool records in TPFDF files to be identified using
database definitions (DBDEFs).
TPF/MVS
Synonym for Airline Control
System (ALCS).
traditional (P-type) file
A file that does
not contain logical records (LRECs), and was created using TPF or ALCS file
access macros or functions (for example, a FINDC or FILEC macro).
Traditional files can be defined to the TPFDF product as P-type files using a
DSECT macro and a DBDEF macro, which allows certain TPFDF macros, functions,
and utilities to be used with the file.
trailer
Synonym for block
trailer.
Transaction Processing Facility (TPF)
A
stand-alone, real-time operating system designed for transaction-driven
applications requiring speed, reliability, and data currency.
T-type file
A file that is a temporary
logical record (LREC) in a W-type file.