Database Design and Documentation
Use this template as a starting point when designing a new e-commerce database schema. It captures the standard entities and relationships so your team shares a single source of truth.
AI Chart Template
ER Diagram Template for E-Commerce Databases
Start with a complete, production-ready entity relationship diagram covering the full e-commerce data model — from customers and orders to products and payments.
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ER Diagram Template for E-Commerce Databases
Start with a complete, production-ready entity relationship diagram covering the full e-commerce data model — from customers and orders to products and payments.
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Template
What This Template Offers
A fully structured ER diagram covering seven core entities of a real-world e-commerce database, complete with attributes, data types, primary/foreign keys, and cardinality relationships — ready to customize for your own schema.
- Seven entities: CUSTOMER, ADDRESS, CATEGORY, PRODUCT, ORDER, ORDER_ITEM, and PAYMENT
- Primary keys, foreign keys, and unique keys clearly marked on every attribute
- Seven labeled relationships with source and target cardinality (one-to-many, identifying, non-identifying)
- Attribute data types included (int, varchar, decimal, boolean, timestamp)
- Left-to-right layout with zoom and pan enabled for easy navigation
Use cases
Perfect Use Cases
Developer Onboarding
Help new engineers understand how the system's tables connect without reading through raw SQL migrations. A visual ERD communicates structure far faster than code.
Technical Architecture Reviews
Present your database model to stakeholders or senior engineers during architecture reviews. The diagram makes foreign key relationships and cardinality immediately clear.
Academic and Coursework Submissions
Students studying relational database design can adapt this template as a reference model for assignments covering normalization, key types, and entity relationships.
Customize
How to Customize
Edit Entities and Attributes
Add, rename, or remove entities to match your own schema. Update attribute names and data types, and assign PK, FK, or UK keys as needed using the attribute editor.
Adjust Relationships
Modify the source and target cardinality for each relationship, change the relationship label, or switch between identifying and non-identifying types to reflect your actual data rules.
Change Layout and Export
Switch the diagram direction (top-to-bottom, left-to-right, etc.), adjust font size, then download as a high-quality PNG or SVG to drop straight into your docs, slides, or wiki.
Key Benefits
- Saves hours — skip building the standard e-commerce schema from scratch
- Covers real production patterns including order line items, shipping addresses, and payment tracking
- AI-powered: describe a schema change in plain language and let the tool update the diagram for you
- No install or sign-up required — open the template and start editing immediately
Pro Tips
- Use the 'Left to Right' layout for wide schemas with many entities — it keeps relationship lines from crossing.
- Mark every foreign key with the FK tag so readers can instantly trace how tables join without reading the relationship lines.
- Export to SVG for documentation sites and Confluence pages — SVG scales perfectly at any zoom level.
Start now
Build Your Own ER Diagram
Describe your database schema in plain language and get a complete entity relationship diagram in seconds.
or upload your data file
- Free to start
- No sign-up required
- AI-powered
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