Differences between session vs session factory - Hibernate?

Question

Do we have any other differences other than the below? Also please validate whether the below are correct

1. SessionFactory objects are one per applicati

Answer 1

Sessionfactory:

1. It is one instance per datasource/database.
2. It is thread-safe.
3. It is a heavyweight object, because it maintains data sources, mappings, hibernate configuration information etc.
4. Sessionfactory will create and manage the sessions.
5. If you have say, 4 datasources/databases, then you must create 4 session factory instances.
6. sessionfactory is an immutable object and it will be created as a singleton while the server initializes itself.

Session:

1. It is one instance per client/thread/one transaction.
2. It is not thread-safe.
3. It is lightweight.
4. sessions will be opened using sessionfactory.openSession() and some database operations will be done finally session will be closed using session.close().