Exam Rev-Con-201 Topic 4 Question 65 Discussion

Actual exam question for Salesforce's Rev-Con-201 exam
Question #: 65
Topic #: 4

A Revenue Cloud Consultant is defining relationships in Constraint Modeling Language (CML) to model a house that must contain rooms. The house must have at least one and at most five rooms, and exactly two bathrooms. The consultant also wants the system to instantiate rooms in a specific order ?first a Living Room, then a Bedroom ?when rooms are created. Which script correctly defines these relationships in CML?

A. type House {
relation rooms : Room[0..5] order (Bedroom, LivingRoom); relation bathrooms : Bathroom[2];
}
type Room;
type LivingRoom : Room;
type Bedroom : Room;
type Bathroom : Room; B. type House {
relation rooms : Room[1..5] order (LivingRoom, Bedroom); relation bathrooms : Bathroom[2];
}
type Room;
type LivingRoom : Room;
type Bedroom : Room;
type Bathroom : Room;

Suggested Answer: B Vote an answer

Core requirement:
Rooms: min 1, max 5 -> Room[1..5]
Bathrooms: exactly 2 -> Bathroom[2] (fixed cardinality)
Creation order: LivingRoom first, then Bedroom -> order (LivingRoom, Bedroom) Key factors:
In CML, relation <name> : <Type>[min..max] sets cardinality; a single number (e.g., [2]) sets an exact count.
The order(...) clause specifies the instantiation order for related components.
Subtyping (e.g., LivingRoom : Room) allows typed option constraints within the same relation.
Option A is incorrect because it allows 0 rooms ([0..5]) and reverses the desired order.
Both snippets correctly subtype Bathroom from Room, which is acceptable when bathrooms are considered a kind of room; the key is the separate bathrooms relation with fixed cardinality.
Comprehensive solution:
Use option B to enforce the minimum/maximum rooms, exact bathroom count, and deterministic instantiation order that meets the business rule.

by Harold at Aug 16, 2026, 12:19 AM

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