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110
5.7 The PDB Database System
As of MSC.Patran Version 8, the InterBase database system has been replaced by a
custom databasesystemdeveloped specificallyforMSC.Patran. ThePatran Database
(PDB) includes aspects of both relational and object oriented databases. Its features
include:
Improved performance and stability for MSC.Patran products.
Enhanced compatibility between platforms (see Moving Databases
Between Platforms (p. 112)).
Automatic compression when you close a database.
Greater control over memory management. See Environment Variables
(p. 92).
No additional installation requirements.
Improved compatibility with NFS mounted databases and working
directories
Upgrading Databases
MSC.Patran automatically upgrades old databases to the current version when you
openthem.Ifyouhavealargenumberofdatabases,werecommendthatyouupgrade
these in one “batch” process. Note that once a database is converted, it cannot be
reopened in an older version.
Conversion from version 7.5 orearlier (InterBase) to version 8 or later (PDB) requires
a valid InterBase installation.
The following commandconverts files from their current database schema version to
the latest version (at least one filename must be supplied):
# <
inst
>/patran
nn
/bin/p3convert <file1.db> <file2.db>
ops_manual.book Page 110 Friday, July 27, 2001 12:07 PM
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