What does DSN stand for?
| Full form | Data Source Name |
|---|---|
| Category | Technology & computing |
| Type | Initialism |
The initialism DSN stands for Data Source Name in database connectivity. In an ODBC configuration, it names a data source whose connection information an application can use.
A DSN name is not necessarily the database name or server name. Microsoft's ODBC setup separates these fields and distinguishes user, system and file DSNs. This guide concerns connection configuration, not an email Delivery Status Notification or a military telephone number.
Meaning in context
- Data Source
- The destination or source used by the application through its configured connection.
- Name
- The identifier used to request that configured data source. Other connection fields can specify the actual server and database.
Practical examples
Distinguish the names
- Before
The DSN name proves that the server is called Reports.
- After
The DSN is named Reports; its server is specified separately in the connection configuration.
A convenient data source label does not establish a server hostname.
Identify the configuration
- Before
The application has a DSN, so every account can use it.
- After
Check which DSN type and user context the application uses before assuming that the configuration is available to it.
A connection label alone does not explain configuration scope or access permissions.
Record the application architecture
- Before
The DSN exists in one administrator window, so any application must find it.
- After
Check the DSN type and whether its configuration matches the application's 32-bit or 64-bit context.
The administrator listing does not remove the need to check the application context. This question is more specific than changing the database because a label was not found.
Original illustrative examples, not quotations or reports of actual events.
Use DSN with clarity
Which connection field does this DSN value identify?
See all guidance
Explain a DSN field
State that the label selects a configured data source.
Reports is the data source name used by this application.
Investigate a connection
Record the application context and DSN type before changing unrelated database settings.
We need to verify the DSN configuration visible to the application.
Resolve ambiguity
Database drivers and connection dialogs indicate this meaning; email reports indicate another.
This DSN appears in the ODBC connection configuration.
These are illustrative exercises. The tool prepares a draft in your browser; it does not inspect your system, change settings or confirm the facts you enter.
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By AcronymIndex Editorial Team · Editorial policy