Returning a EntityAlreadyExists error if the Person's id already exist.

Returning a NoSuchEntityError error if the ownerId does not exist.

Open a connection to MySQL using environment variables.

Returning a FailedCommitingRequest error if the Person's id does not exist.

Returning a FailedCommitingRequest error if the Task's id does not exist.

first gets the Persons values in 'results' then put each of them in a Person array.

Returning a NoSuchEntityError error if the Person's id does not exist.

Get all of the 'active' or 'done' tasks of a Person according to the status value.

Returning a NoSuchEntityError error if the Task's id does not exist.

Returning a EntityAlreadyExists error if the Person's Email already exist.

Returning a FailedCommitingRequest error if the Task could not been update.