Junction Object — Salesforce Administrator Practice Questions

A junction object is a custom object with two master-detail relationships that links two other objects together, enabling many-to-many associations in Salesforce. Because it has two master-detail parents, the junction object inherits the sharing and security settings of both, and its records are deleted when either parent is deleted. The Administrator exam tests when to create a junction object, how ownership and access are determined for its records, and how it differs from a lookup relationship. Recognizing the junction object pattern is essential for data modeling questions on the exam.

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