AI Chart Template

CRM Contacts–Leads–Deals ERD: a clear, scalable model

This erd visualizes how Companies, Contacts, Leads, and Deals relate, including the many-to-many link between Contacts and Deals via Deal_Contact.

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ERD DiagramSales/CRMData ModelingInteractive

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CRM Contacts–Leads–Deals ERD: a clear, scalable model

This erd visualizes how Companies, Contacts, Leads, and Deals relate, including the many-to-many link between Contacts and Deals via Deal_Contact.

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What This Template Offers

Jump-start your CRM data model with a proven ERD that maps core entities and constraints for fast, accurate implementation.

Ready-to-use entities, keys, and types
M:N Contacts–Deals via Deal_Contact
Clear cardinalities and optionality
Normalized, scalable structure (3NF-minded)
Email uniqueness on Contacts, flexible on Leads

Use cases

Perfect Use Cases

Implementing or replatforming a CRM

Use the ERD to align sales, ops, and engineering on entity definitions and relationships before you build—reducing rework and data drift.

Migrating spreadsheets to a proper database

Transform messy sheets into a clean schema. The model prevents duplicate contacts and enforces consistent company–lead–deal links.

Integrating marketing automation and analytics

Map lead sources, statuses, and deal stages to a stable structure that supports attribution, dashboards, and pipeline forecasting.

Designing a warehouse or reverse ETL model

Adopt a clear core model that downstream tools can trust, improving join logic, performance, and report accuracy.

Customize

How to Customize

Add or rename attributes

Include fields your team needs—e.g., lead_score, lifecycle_stage, or stage_change_date—while keeping keys and types consistent.

Refine constraints and cardinality

Set unique indexes (e.g., company name), make company_id optional on Leads and Deals, and confirm M:N Contacts–Deals via Deal_Contact.

Style and share

Adjust colors, fonts, and layout for clarity. Then download, share a link, or embed for instant team alignment.

Key Benefits

Reduces ambiguity with clear entities and keys
Prevents duplicates and orphan records
Scales with your pipeline and reporting needs
Speeds up implementation across teams

Pro Tips

Keep emails unique on Contacts but not on Leads to support multi-touch capture before qualification.
Use a junction table (Deal_Contact) to record contact roles on deals (e.g., Decision Maker, Influencer).
Document optional vs required FKs (e.g., company_id) to support early-stage leads and partner deals.

Start now

Create Your Own erd—fast and confidently

Turn your CRM schema into a clear, professional ER diagram in minutes. Edit, style, and share instantly—no design skills needed.

or upload your data file

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