The Airport Authority of Utopia maintains a spreadsheet to store information about airlines, pilots and planes. There is only one airport but several airlines use it. The airport employs you as consultant to develop a simple database system. You are required to normalise the following spreadsheet and create an Entity-Relationship Diagram (ERD) to match the resulting tables of the data normalisation process. The following are some sample data on the spreadsheet.

(a) Normalise the above spreadsheets to tables in third normal form (3NF). Specify the primary key and foreign key (if any) for each table. (5 marks)

(b) Develop an Entity-Relationship Diagram (ERD) from the tables in (a)? (10 marks)