HQL is used by Hibernate to carry out database operations in Java. It holds a lot of benefits due to its attributes. HQL acts as a self-reliant query language; hence it doesn’t have to depend on databases to make iterations. HQL also assists with polymorphic queries. Polymorphic queries enable query results to include traces of the object like its subclasses. HQL can convert SQL queries that are columnar into objects. HQL queries are easier to grasp as they use property names to describe them. Hence HQL provides increased access and ease for relational databases as well.