1. Discuss the importance of data models.
2. Given below is a database that records data about a music track.

Table name: ARTIST

ArtistID	ArtistName	ArtstLabour	YearsActive
20010	Ernie Zakrie	FMC Music	2009
20011	Siti Nurhaliza	Siti Nurhaliza Productions	1995
20012	Naim Daniel	World Peace Entertaiment	2018
20013	Iman Troye	XO House	2018

Table name: SONG

SongID	SongTitle	ArtistID
601	Teman	20013
600	Gundah	20010
599	Aku Bidadari Syurgamu	20011

1. For each table, identify the primary key and foreign key(s). If a table does not have a foreign key, write None.

Table name	Primary key	Foreign key
ARTIST
SONG

2. Does the SONG table exhibit referential integrity? Justify your answer.

4.The following entity consists of one multivalued attribute. Identify the multivalued attribute and solve the problem caused by the multivalued attribute into a more proper database design.

EMPLOYEE

PK EmpID

EmpName

EmpAddress

EmpSkill