Exercise $2\mathrm{.}2.$ A Formula One fan club wants to set up a database to keep track of the results of all the seasons since the first Formula One World championship in $1950.$

A season is held on a year, between a starting and an ending date, has a number of races, and is described by a summary and a set of regulations. A race has a number $($stating its order in a season$),$ an official name $($e$.$g$.,2013$ Formula One Shell Belgian Grand Prix$),$ a race date, a race time $($expressed

in both local and UTC time$),$ a description of the weather when the race took place, the pole position $($consisting of driver name and time realized$),$ and the fastest lap $($consisting of driver name, time, and lap number$).$

Each race of a season belongs to a Grand Prix $($e$.$g$.,$ Belgian Grand Prix$),$ for which the following information is kept: active years $($e$.$g$.,1950-1956,1958,$ etc. for the Belgian Grand Prix$),$ total number of races $(58$ races as of $2013$ for the Belgian Grand Prix$),$ and a short historical description. The race of a season is held on a circuit, described by its name $($e$.$g$.,$ Circuit de Spa$-$Francorchamps$),$ location $($e$.$g$.,$ Spa, Belgium$),$ type $($such as race, road, street$),$ number of laps, circuit length, race distance $($the latter two expressed in kilometers$),$ and lap record $($consisting of time, driver, and year$).$ Notice that the course of the circuits may be modified over the years. For example, the Spa$-$Francorchamps circuit was shortened from $14$ to $7$ km in $1979.$ Further, a Grand Prix may use several circuits over the years, as we the case for the Belgian Grand Prix.

A team has a name $($e$.$g$.,$ Scuderia Ferrari$),$ one or two bases $($e$.$g$.,$ Maranello, Italy$),$ and one or two current principals $($e$.$g$.,$ Stefano Domenicali$).$ In addition, a team keeps track of its debut $($the first Grand Prix entered$),$ the number of races competed, the number of world championships won by constructor and by driver, the highest race finish $($consisting of place and number of times$),$ the number of race victories, the number of pole positions, and the number of fastest laps. A team competing in a season has a full name, which typically includes its current sponsor $($e$.$g$.,$ Scuderia Ferrari Marlboro from $1997$ to $2011),$ a chassis $($e$.$g$.,$ F$138),$ an engine $($e$.$g$.,$ Ferrari $056),$ and a tyre brand $($e$.$g$.,$ Bridgestone$).$

For each driver, the following information is kept: name, nationality, birth date and birth place, number of races entered, number championships won, number of wins, number of podiums, total points in the career, number of pole positions, number of fastest laps, highest race finish $($consisting of place and number of times$),$ and highest grid position $($consisting of place and number of times$).$ Drivers are hired by teams competing in a season as either main drivers or test drivers. Each team has two main drivers and usually two test drivers, but the number of test drivers may va