Ocr A-Level Computer Science Study Guide Rated A+

Big O Notation {Ans: A method of showing the time (number of iterations) and the space (storage required) of an algorithm.}Regulation of Investigatory Powers Act {Ans: Authorities can force ISP's to hand over user data (and collect it in the first place). They can monitor internet communications as they please. This helps catch criminals or terrorists before they hurt people, however the consumer is not aware of this privacy breach. Also, the laws alter the ISP market (potentially bad for business)}Solid State Storage {Ans: Storage medium for main disk drive on a computer, is generally more expensive, therefore less storage space, however is more reliable.}Heuristic {Ans: }Stack {Ans: }Control Unit {Ans: The part of the CPU that manages the execution of instructions. The control unit fetches an instruction, and decodes it before executing it by sending 'control signals' to other parts of the computer.}Real/Float {Ans: A number with a fractional part}Parsing {Ans: Systematically applying a set of rules to a statement to determine validity.}SQL INSERT INTO {Ans: When inserting data is needed, this says which fields will be added to - eg. teacher name, room etc.}Contemporary Architecture {Ans: Usually a