Which data structure has a O(1) constant time operation?

To create a copy of a file onto a different storage device or with a different name, you use the ________ command

A) Open B) Save C) Save As D) Open As

Which of the following is a reason to use a delete query?

A) It ensures that minimal storage space is being used. B) To ensure that you have some sort of data in your tables C) It will allow for real-world changes that can occur within your business. D) Since older data does not serve a purpose in business, you will want to delete data from the database.