diff --git a/README.md b/README.md
index 03f3d05..b328ff1 100644
--- a/README.md
+++ b/README.md
@@ -9,3 +9,11 @@ The recommended way to install composer packages is:
 ```
 composer require hi-powered-dev/cake-products
 ```
+
+## Database Structure
+
+Products belong to ProductCategories, ProductCategories is hierarchical and belongs to ProductCatalogs.
+
+ProductCategoryAttributes belongs to ProductCategories and attributes are inherited from their parents up the category tree.
+
+ProductCategoryAttributes can have many ProductCategoryAttributeOptions (constrained attributes) 
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