exams

Exams attached to products.

• ETL strategy: merge
• PK: id

Columns

Column	Type	Description
id	BIGINT	PK.
id_tenant	BIGINT	FK → tenants.id.
id_product	BIGINT	FK → products.id.
title	TEXT	Exam title.
created_at	TIMESTAMPTZ
deleted_at	TIMESTAMPTZ

Relationships

• Parent: tenants, products.
• Children: exam_questions via id_exam; exam_results via id_exam.
• Referenced by: lessons via lessons.id_exam (when a lesson is the exam's entry point).