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Coupon System ER Diagram Examples & Templates

Need to model a coupon system database? These ER diagram examples show how to design tables for coupons, users, campaigns, redemptions, and restrictions—covering everything from single-brand coupon codes to large-scale flash sale platforms. Use the generator to create your own coupon system ER diagram instantly.

Standard Chen 1976 / Everest 1976 (crow's foot)Engine schematex-erdExport SVG · PNG · PDF
4 templates
ERD Coupon System ER
Large-Scale Flash Sale Coupon System ERDLarge-Scale Flash Sale Coupon System ERDCoupon System ERUse template →Multi-Brand Coupon Aggregator Platform ERDMulti-Brand Coupon Aggregator Platform ERDCoupon System ERUse template →Coupon System ER DiagramCoupon System ER DiagramCoupon System ERUse template →Restaurant Table-Side Coupon Redemption ERDRestaurant Table-Side Coupon Redemption ERDCoupon System ERUse template →

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How to

How to use an erd template.

  1. 01List the core entities

    Identify tables like Coupon, User, Campaign, Redemption, and CouponRule. Add scenario-specific tables such as Store or Brand if needed.

  2. 02Define relationships and cardinalities

    Connect users to redemptions, campaigns to coupons, and coupons to rules. Set one-to-many or many-to-many relationships as appropriate.

  3. 03Add attributes and constraints

    Specify fields like coupon code, discount value, expiry date, per-user limit, and redemption status for each entity.

  4. 04Generate the ER diagram

    Use the editor to render your schema from the entities and relationships, then drag to arrange the diagram clearly.

  5. 05Export and share

    Download as PNG or SVG, or copy the generated SQL/DDL to implement the schema in your database.

FAQ

Questions about erd templates

What entities are typically in a coupon system ER diagram?

Common entities include Coupon, User, Campaign, Redemption, CouponRule, and sometimes Store or Brand. The examples above show variations for single-brand, multi-brand, and flash sale systems.

How do I model a coupon that can be used multiple times per user?

Add a Redemption entity linking Coupon and User with a redemption count or a separate table for each redemption event. Use a one-to-many relationship and enforce limits in the application or with database constraints.

Can I generate a coupon system ER diagram from existing SQL?

Yes, if your database schema is defined, you can reverse-engineer or paste SQL into the generator to create an ER diagram, then adjust for coupon-specific tables.

What is the difference between a coupon and a campaign in an ER diagram?

A Campaign represents a promotion that issues many Coupons. A Coupon is an individual code or rule. Typically Campaign has a one-to-many relationship with Coupon.

Which ER diagram tool should I use for coupon system design?

ChatDiagram's ERD generator supports entity, relationship, and cardinality editing with export to SQL, making it suitable for coupon system schemas.