What relationship pattern is illustrated in the following schema?

VEHICLE (VehicleID, Cost)
CAR (VehicleID, NumberOfSeats)
TRUCK (VehicleID, CargoCapacity)
VehicleID in CAR must exist in

VehicleID in VEHICLE VehicleID in TRUCK must exist in VehicleID in VEHICLE.

A) Association relationship
B) Intersection relationship
C) Recursive relationship
D) Strong entity relationship
E) Supertype/subtype relationship

E) Supertype/subtype relationship

Explanation:

The type of relationship pattern illustrated in the schema below is E) Supertype/subtype relationship

Supertype/subtype relationship is the types of relationship that exist in the form of parent - children relationship in an entity. The supertype entity is the parent while the subtype entity is the child. The supertype entity contains one or more attributes that is common to the subtype entity.

The schema first define the Supertype entity:

VEHICLE (VehicleID, Cost)

CAR (VehicleID, NumberOfSeats)

TRUCK (VehicleID, CargoCapacity)

Then, the following (subtype entity) make reference to the Supertype:

VehicleID in CAR must exist in

VehicleID in VEHICLE

VehicleID in TRUCK must exist in

VehicleID in VEHICLE.

Since the subtype is making reference to supertype, we can say the relationship pattern illustrated in the schema is: Supertype/subtype relationship.

b. xor is the correct answer

okay, so i know we just goofed around in that chat, but ive been like genuinly depressed, like medically depressed for almost 4 years now. i had my first panic attack when i was 8. i woke my mum up and told her i felt like i was in a dream. like i was a goldfish in a bowl, looking at all these things going on around me and feeling . tiny. wort hless. and i now am now 17 y/o. i still feel those emotions daily. life used to go by so quick.like every day i would wake up and just like want to go back to bed cause i always felt like i was in the wrong place. i guess looking back, i was in the wrong state of mind. i took a expensive like nice trip to whyoming with my grandfather and ha ted it. like idk why. i would have loved it now, but i found myself writing in a journal everyday because i would forget what happened the day before, couldnt remember what i ate for like the previous meal. just my memory left me for the week i was there. worst feeling ive ever experienced.