A Data Source Name (DSN) is a configuration string that specifies the details needed to connect to a specific data source or database. A DSN typically includes information such as the name and location of the database server, the name of the database, and the credentials needed to access the database.
DSNs are used to define a connection between a database management system (DBMS) and a data source. They are typically used in conjunction with database connectivity software, such as an ODBC (Open Database Connectivity) driver, to establish a connection between the DBMS and the data source.
DSNs are used to simplify the process of connecting to a database by encapsulating all of the necessary connection details in a single configuration string. This makes it easier for developers to connect to a database and enables them to switch between different data sources without having to reconfigure their application.
DSNs are commonly used in applications that need to access and manipulate data stored in a database, such as web applications, desktop applications, and Business Intelligence tools. They are an important part of the database infrastructure and are used to facilitate the exchange of data between different systems and applications.