1. Introduction to Ingres Security : Directory and File Permissions
 
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Directory and File Permissions
Databases are protected from user access by the permissions on the directories containing the database files and the permissions on the database files themselves. Users cannot look at the files in a database except through Ingres. Even in Ingres, files are protected from access except from the privileged accounts. The binary files are in a special format, making decoding of any information difficult.