$1-$ Put this relation in BCNF

SKU$\_$DATA

$2-$ Put this relation in BCNF

STUDENT$\_$ACTIVITY

$3-$ Create an ER model to reflect the information requirements for the following case:

A consulting firm needs to keep track of its employee information such as employee

name, home address, salary, cell phone number etc. Every employee has a unique

employee ID assigned by the firm. Each employee has a job title. Some employees may

work on many projects but not every one works on a project. A project is identified by a

project's ID$.$ A project also has a title. The firm needs to keep track of its past and

ongoing project's information, including budget, director name, project starting and

ending dates. The firm also wants to know which employee$($s$)$ working on which

project$($s$).$ Usually a project always has some employee$($s$)$ working on it$.$ Each project is

developed for and sponsored by its client. The firm needs to keep contact information of

all clients, including client name, address, email and phone number.