Nonstop Database, HiRDB Version 9 UAP Development Guide
When an application program uses a file DSN, it can connect to a data source without obtaining information from ODBC.INI or the registry because the DSN file stores information for connecting to the data source.
By sharing the file, multiple users can connect to the HiRDB system without having to register the data source (formerly the machine data source) to each machine. A file DSN can be used when the ODBC component version is 3.0 or higher.
File DSNs can be created by the ODBC data source administrator.
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