Question

How do you define sequence generated primary key in hibernate?

Answer 1

A sequence-generated primary key in Hibernate is a strategy used to generate unique identifier values for entities in a database table.

Step-by-step explanation:

A sequence-generated primary key in Hibernate is a strategy used to generate unique identifier values for entities in a database table. In this strategy, Hibernate uses a database sequence to generate primary key values. The sequence is defined in the database and Hibernate obtains values from it to assign as primary keys to the entities.

For example, suppose we have a table called 'Employee' with an 'id' column as the primary key. In Hibernate, we can define the primary key generation strategy as 'sequence' and provide the name of the sequence in the database. Hibernate will then use this sequence to generate unique values for the 'id' column when new Employee entities are inserted into the table.