Schema for Some Examples
•Reserves:
–Each tuple is 40 bytes long,  100 tuples per page, 1000 pages (4000 tuples)
•Sailors:
–Each tuple is 50 bytes long,  80 tuples per page, 500 pages (4000 tuples).
Sailors (sid: integer, sname: string, rating: integer, age: real)
Reserves (sid: integer, bid: integer, day: dates, rname: string)