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AQA INFO1 S6

Revision cards for AQA AS INFO1 Analysis & Design

QuestionAnswer
Who is the client? The person who has requested/needs the solution
Who is the end user(s)? The person/people who will make active use of the solution
Who are the audience? The people who the solution could be aimed at, who will view the content but not input e.g. customers browsing a website
What is analysis? The stage of the project lifecycle where the problem that requires solving is identified. Requirements and user skills are identified
Different methods of investigating a problem Interview Questionnaire Observation Reviewing existing paperwork
What are requirements? What the client needs the solution to do
What is design? The stage of the systems life cycle where the application, tools and techniques used to solve the problem will be decided and user requirements are interpreted into designs for input, process and output
What is validation? Checking data as it is entered to ensure that it is reasonable, aimed at reducing data entry errors
What is verification? Checking data once it has been entered to ensure it is correct
Validation vs verification Validation checks data meets a rule, e.g. a number has been entered in a quantity field, verification checks the data is accurate, e.g. the correct quantity has been entered
Validation methods Range check Length check Format check Lookup check Uniqueness check Presence check
Verification methods Double entry method Proof reading Control and hash totals