Update vs. Save

1. What is the difference between update and save?
2. What is the difference between Save () and saveOrUpdate ()?
3. What is save or update in hibernate?
4. What is update in hibernate?

What is the difference between update and save?

save() method saves records into database by INSERT SQL query, Generates a new identifier and return the Serializable identifier back. On the other hand saveOrUpdate() method either INSERT or UPDATE based upon existence of object in database.

What is the difference between Save () and saveOrUpdate ()?

save() generates a new identifier and INSERT record into the database while saveOrUpdate can either INSERT or UPDATE based upon the existence of a record. Clearly, saveOrUpdate is more flexible in terms of use but it involves extra processing to find out whether a record already exists in the table or not.

What is save or update in hibernate?

hibernate. Session class methods, save & saveOrUpdate is, save generates a new identifier and results in an INSERT query, whereas saveOrUpdate does an INSERT or an UPDATE. save. Save method stores an object into the database. That means it insert an entry if the identifier doesn't exist, else it will throw error.

What is update in hibernate?

3.4. Update. As with persist and save, the update method is an “original” Hibernate method. Its semantics differ in several key points: it acts upon a passed object (its return type is void).