$10$

$3$ points

Considering the following tables, is a primary key.

Student Table

SID Name Expected Graduation Year

$123$ Smith $2017$

$234$ Jones $2018$

$567$ Barilla $2018$

Professor Table

PID Name Tenure Year

ABC Jones $1995$

DEF Brilliant $2000$

GHI Genius $2000$

Class Table

ID Name PID

MGT$101$ Intro to Management ABC

BUS$101$ Intro to Business ABC

MGT$201$ Intermediate Management GHI

Professor Table: Name

StuNent Table: ID

Professor Table: PID

Student Table: Expected Graduation Year