What is a DataSource and its advantages ?

A DataSource object is the representation of a data source in the Java programming language.

In basic terms, a DataSource is a facility for storing data.

DataSource can be referenced by JNDI.

Data Source may point to RDBMS, file System , any DBMS etc.

Advantages of DataSource

• An application does not need to hardcode driver information, as it does with the DriverManager.
• The DataSource implementations can easily change the properties of data sources.
  For example : There is no need to modify the application code when making changes to the database details.
• The DataSource facility allows developers to implement a DataSource class to take advantage of features like, connection pooling and distributed transactions.