# What is the difference between System DSN, User DSN, and File DSN when working with Open Database Connectivity (OBDC)?

**Introduction**  
When working with the Database building block in Leapwork, users need to create a database connection. A common question is how to choose between a System DSN, User DSN, or File DSN when configuring a database connection.

**ODBC DSN**  
An ODBC DSN holds the following information to configure an ODBC driver for use.

- Database Information  
- UserID  
- Password  
- Connection Information  
- A User DSN is only accessible by the user who created it on the workstation.  
- A System DSN is accessible by any user logging into the workstation.  
- A File DSN is shared between all users that have the same drivers installed. It can be stored on a workstation but can also be placed in a shared directory in a network location.

A User or System DSN is recommended for consistent performance when using ODBC, see [Access SQL-Database via ODBC driver in Leapwork](https://support.leapwork.com/s/article/AccessSQLDatabaseviaODBCdriverinLeapwork63307d1af1af1).

For clarification, contact our [Priority Support](mailto:prioritysupport@leapwork.com).