Options: Where the before-images are applied to the database, Where the after-images are applied to the database, Where the after-images and before-images are applied to the database, Switching to an existing copy of the database
Options: is a device that performs a sequence of operations specified by instructions in memory., is the device where information is stored, is a sequence of instructions, is typically characterized by interactive processing and time of the CPU's time to allow quick response to each user.
Options: A) The name of companies that made computers
B) The name of product a company gives to identify its product in market
C) A name of class to indicate all similar products from different companies
D) All of above
Options: EXISTS/NOT EXISTS is a form of a correlated subquery., The processing of the SELECT statements is nested., They can be used to verify functional dependencies., They are very similar to a regular subquery.