Devices $($DeviceID$,$ DeviceName, DeviceType, UserName, UserEmail, AdditionalFamilyUsers,

UserPreferences, UsageStartTimestamp, UsageEndTimestamp, UsageData$).$

With the following business rules:

$1.$ Each device in the system has a unique identifier.

$2.$ A device has only one type $($thermostat$,$ camera, etc.$).$

$3.$ A device is associated with only one main user.

$4.$ A user can can add a number of family members that can have access to the device.

$5.$ A user has only one email address.

$6.$ Each device has associated UserPreferences. These preferences are specific to each userdevice combination, suggesting that different users might have different preferences for the

same type of device.

$7.$ The system logs usage data for each device, marked by UsageStartTimestamp and

UsageEndTimestamp.

$8.$ UsageData is recorded for each device usage session. This could include various metrics

specific to the type of device and its usage in that session.

For this task

$1.$ List the functional dependencies of the given schema.

$2.$ Normalize this table into $4$NF$.$ Explain in detail each step of your normalization process