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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As of MSC.Patran Version 8, the InterBase database system has been replaced by a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>
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