Update README.md

README.md

@@ -154,6 +154,12 @@ Requirements:
 * A user can have multiple orders.
 * An order can contain multiple items.
 
+Note:
+Order is a reserved SQL keyword in many database systems.
+Choose an appropriate table name such as `orders` if needed.
+
+---
+
 ---
 
 ### 4. OrderDetail
@@ -199,6 +205,24 @@ Before writing any SQL, create a simple Entity Relationship Diagram (ERD) to vis
 
 This diagram does not need to be submitted, but it is strongly recommended as part of the database design process.
 
+## 📁 Project Structure
+
+A suggested structure for the project:
+
+- model
+    - Database entity classes
+
+- database
+    - PostgreSQL connection management classes
+
+- dao
+    - JDBC database access classes
+
+- service
+    - Application business logic
+
+- ui
+    - Console user interface
 
 ## 💻 Required Features & App Flow