Browse Prior Art Database

User Data-Linkage Procedure

IP.com Disclosure Number: IPCOM000105115D
Original Publication Date: 1993-Jun-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 2 page(s) / 47K

Publishing Venue

IBM

Related People

Lennon, CJ: AUTHOR [+4]

Abstract

Disclosed is a methodology by which data used by multiple applications can be more efficiently accessed and is also protected against corruption.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 63% of the total text.

User Data-Linkage Procedure

      Disclosed is a methodology by which data used by multiple
applications can be more efficiently accessed and is also protected
against corruption.

      Whenever data is shared by multiple applications, most often
the data is kept in a file or database that is accessed by these
applications.  Each application must OPEN the file, locate the data
record, READ the record, and then CLOSE the file.  Each time an
application requires a segment of this shared data, this process must
occur.  Because file Input/Output operations tend to be slow compared
to the speed of the computer, performance is always impacted.

      User Data Linkage Procedure (UDLP) is a methodology by which
data is packaged up into a load module and the applications use the
operating system facility to load the data into the machine, one
time, and use labels within the load module to quickly access the
data.  The UDLP process uses data records from a file as input.  Each
data record is converted to an object module with an entry point
name.  This name can be the key of the record used in the input file
if it was a keyed file or just a name assigned by the creator of the
input file.  These modules are then statically linked into a single
load module.  The load module is marked REENTRANT so that once it is
loaded into the machine, its contents in storage cannot be altered.

      When an application requires access to the data, it loads the
module into s...