Because, it would be really difficult to specify the connection details in every method that access the database. Instead, if we create a data source, it can be used to connect to the database in every method we want.
What are Callback interfaces?
What is the difference between and merge and update?
What the Core interfaces are of hibernate framework?
How do you define sequence generated primary key in hibernate?
What is the difference between load() and get()?
How do you invoke Stored Procedures?
What do you mean by Named - SQL query?
Define cascade and inverse option in one-many mapping?
What are POJOs?
Explain Criteria API?
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