In JPA why and how to use insertable and updatable parameter?

Question

@JoinColumn(name = "", referencedColumnName = "", insertable = false, updatable = false) 

Why insertable = false, updatable = false are required while using JPA for creating table?

Answer 1

These two parameters are not required. You use them when you want JPA to prevent inserts and updates for a specific field.

Here is the relevant spec - @JoinColumn.