SF-Data-Arch Data Modeling and Database Design Practice Question
Universal Containers wants to track complex relationships between Accounts where one Account can be a subsidiary of many others, and an Account can have many parent companies. Which modeling approach should the Architect recommend?
⚠ Common exam trap
Candidates often try to use standard parent-child lookup fields on the Account object, which cannot support a many-to-many relationship structure between two Account records.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Implement a custom junction object with two lookup fields to the Account object.
Many-to-many relationships are best handled using a junction object in Salesforce. By creating a custom object, you can link two Account records while storing additional metadata like the nature or duration of the relationship. This approach overcomes the limitations of standard lookup fields, which only support one-to-many structures, ensuring data integrity and allowing for robust reporting across complex corporate hierarchies.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Add multiple self-lookup fields on the Account object.
Why it's wrong here
Adding multiple lookup fields creates a rigid structure that limits the number of relationships to the number of fields created. This approach is not scalable for complex hierarchies and complicates reporting, as each field would require separate filter criteria to visualize the full network of relationships effectively.
- ✗
Create a Text field to store a comma-separated list of parent IDs.
Why it's wrong here
Storing IDs in a text field violates fundamental database normalization principles. It prevents the use of standard lookup filters, makes maintaining referential integrity impossible, and renders native Salesforce reporting tools unable to traverse the relationships for cross-object analysis or roll-up calculations, leading to severe data management issues.
- ✓
Implement a custom junction object with two lookup fields to the Account object.
Why this is correct
A custom junction object provides a flexible many-to-many link between two Account records. This model supports unlimited relationships, enables the inclusion of additional attributes about the connection, and integrates perfectly with standard Salesforce features like related lists, sharing rules, and report types for comprehensive hierarchy visibility.
- ✗
Use a master-detail relationship between the Account and a custom object.
Why it's wrong here
Master-detail relationships are designed for one-to-many scenarios where the child record's lifecycle is strictly dependent on the parent. Because this relationship requires a single parent, it cannot facilitate a many-to-many model where an object needs to be linked to multiple parent Account records simultaneously.
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Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official Salesforce exam blueprint
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