Task $2(2\mathrm{.}0$ marks$)$

Implement the following data manipulations on a collection of documents transport.

$(1)$ Remove a mechanic John Fox.

$(2)$ Remove information about a date of birth $($dob$)$ from a description of employee number $11.$

$(3)$ Remove information about a trip number $7$ performed by an employee number $11.$

$(4)$ Add information about a new trip performed by an employee number $11.$ At the moment we only know a trip number $999$ and registration of truck used PKR$786.$

$(5)$ Change a date of a trip number $15$ performed by an employee number $11$ to $28$ SEP$-18.$

Very important

Implementation of each data manipulation must consist of the invocations of two methods:

print$(\text{'}($n$)$ db$.$transport.data$-$manipulation$-$method$($ data manipulation$)\text{'})$;

db$.$transport.data$-$manipulation$-$method$($ data manipulation $)$;

where $n$ is a number of a data manipulation as above, i$.$e$.1$ or $2$ or $...$ or $5.$

A method print$()$ prints a text of a data manipulation into a report. A method datamanipulation$-$method processes a data manipulation and it includes the results into a report from the processing of a script solution$2.$js$.$

Before generation of a report it is strongly recommended to "refresh" a collection of the documents transport with the methods db$.$transport.drop$()$ and load$(\text{'}$transport$.$js$\text{'}).$