title: consider the following atttributes, which for clarity have been mapped to letter as
body: <pre><code>A - flight_date
  B - plane ticket price
  C - source_airport_country
  D - ticket holder names
  E - address 
  F - source airport
  G - Pilot_name
  H - Pilot_grade
  I - Plane_id
  </code></pre>
  
  <p>There is a functional dependency between the plane_id, the flight date and the pilot name (if I know
  the date of the flight and the plane used I can find the particular pilot that flew that flight). I.e.</p>
  
  <p>AI --> G</p>
  
  <p>What other functional dependencies exist amongst these attribute</p>
  
  <p>answers should use letters to denote the attributes and so
  should look like: AI --> G</p>
  
  <p>For the relation R(A,B,C,D,E,F,G,H,I), (i.e. the attributes above) and using the functional
  dependencies you found above find, using the key determination algorithm, those attributes that are:
  1. Definitely part of the key for R,
  2. Defintely not part of the key for R, and
  3. Maybe in the key for R.
  Finally derive a key for R. </p>