Database file specifications point to the location of permanent and scratch database files used during program execution. When Autodesk Nastran is executed, it generates a database that is located using the FILESPECi directives. A single file located in the same directory as the Model Results Output File is also generated and contains the location of that run’s database. The DATABASE directive can be used to specify this file in place of the Model Input File if the database has already been generated by the Model Translator. Database files can become very large and fill up all available storage space. The database file specifications can also be used to break up a very large model database over several storage devices.
Below is a summary of all database file specifications. Detailed descriptions are given later in this section.
| Directive | Description |
|---|---|
| DATABASE | Model Database File specification. |
| FILESPEC | Model Database File specification 1 – 4. |
| FILESPEC1 | Model Database File specification 1. |
| FILESPEC2 | Model Database File specification 2. |
| FILESPEC3 | Model Database File specification 3. |
| FILESPEC4 | Model Database File specification 4. |
| OUTFILESPEC | Output file specification. |