1.Hibernate: save, persist, update, merge, saveOrUpdate :https://www.baeldung.com/hibernate-save-persist-update-merge-saveorupdate 2.What’s the difference between persist, save, merge and update? Which one should you use?https://thorben-janssen.com/persist-save-merge-saveorupdate-whats-dif...
@OneToMany(//fetch = FetchType.EAGER, fetch = FetchType.LAZY, mappedBy = "instructor", cascade = {CascadeType.DETACH, CascadeType.MERGE, CascadeType.PERSIST, CascadeType.REFRESH}) private List<Course> courseList; I would suggest try both of them in debug mode. In this case, I use lazy typ...
@Entity(name = "Post") @Table(name = "post") public class Post { @Id @GeneratedValue private Long id; private String title; @ManyToMany(cascade = { CascadeType.PERSIST, CascadeType.MERGE }) @JoinTable(name = "post_tag", joinColumns = @JoinColumn(name = "post_id"), inverseJoinC...
Difference between Build ,rebuild ,start , start without debugging Difference between OCX and DLL Difference between Oledb & Adodb? Difference between Option Explicit and Option Strict Difference between Trusted_Connection, Integrated Security, Persist Security Info parameters in connection string Direct prin...
What the difference is between flush() and commit() in SQLAlchemy? I've read the docs, but am none the wiser - they seem to assume a pre-understanding that I don't have. I'm particularly interested in their impact on memory usage. I'm loading some data into a database from a...