database schema for timesheet

Question

Could someone help me with a rough database schema for a timesheet application where the i would be able to

1. Store hours per day for a time period ( 2 weeks ) fo

Answer 1

A table for people(1)

A table for projects(2)

A table for bookings(3) - who did the work (FK into 1), what project did they work on (FK into 2), when did they do the work, how much work did they do.

Select sum(time_booked) from (3) where person equals (some id from 1) and project = (some ID from 2)

or

Select sum(time_booked) from (3) where person equals (some id from 1)

etc...