What is difference between open_form and call_form?

What is difference between open_form and call_form? What is new_form built-in in oracle form?

Open_form opens the indicated form.

Call_form not just opens the indicated form, but also keeps the parent form alive.

new_form built-in
When new_form is called, the new indicted form is opened and the old one is exited by releasing the memory. The new form is run using the same Run form options as the parent form
Difference between post database commit and post-form commit
Post-form commit fires once during the post and commit transactions process, after the database commit occurs......
What is advantage of having disk shadowing/ Mirroring in oracle?
Advantage of having disk shadowing/Mirroring....
What is use of a cursor variable in oracle? How it is defined?
A cursor variable works like pointer in C. It is used to hold address of an item rather than the item itself.....
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