🛠️ How to Create an ER Model & Generate DDL for Oracle APEX | Lucidchart Database Design

In this **how-to video**, I walk you through the **entire process of designing a database** using **Entity-Relationship (ER) modeling** in **Lucidchart** and converting it into a **relational schema** with **primary and foreign key connections**. Once the schema is finalized, we generate **DDL (Data Definition Language) statements** to create tables in **Oracle APEX** and go over **common code generation errors**—and how to avoid them. By the end of this video, you’ll have a **clear understanding of database design**, how to **map an ER model to a relational schema**, and how to **efficiently generate and troubleshoot DDL statements** for **Oracle APEX**. --- ### 🛠️ **What We Cover in This Video:** ✅ **Creating an ER Model in Lucidchart** 📊 ✅ **Converting the ER Model into a Relational Schema** 🔄 ✅ **Defining Primary & Foreign Keys for Data Integrity** 🔑 ✅ **Generating DDL (CREATE TABLE statements) for Oracle APEX** 📝 ✅ **Troubleshooting Common Errors in DDL Generation** ⚠️ --- ### 🔍 **Common DDL Errors & How to Avoid Them:** 🚨 **Incorrect Data Types** – Choosing the right column types for your database 🚨 **Missing Primary or Foreign Keys** – Ensuring relational integrity 🚨 **Naming Conventions** – Avoiding reserved keywords and ensuring readability --- ### 🎥 **Demo: ER Model to Oracle APEX Tables** We **design a sample ER model**, convert it to a **relational schema**, and walk through **every step** of the **DDL generation process**. You’ll learn how to **validate and refine your database design** before deploying it in **Oracle APEX**. --- ### 📖 **Related Videos & Resources:** 📌 **Lucidchart ER Modeling Tutorial** 👉 [Watch Here](https://youtu.be/YourLinkHere) 📌 **Database Normalization Explained** 👉 [Watch Here](https://youtu.be/YourLinkHere) 📌 **Oracle APEX SQL Workshop Basics** 👉 [Watch Here](https://youtu.be/YourLinkHere) --- ### 📌 **Who Should Watch This Video?** 🔹 **Database Designers & Developers** creating relational models in **Oracle APEX** 🔹 **Software Engineers & Students** learning **database design best practices** 🔹 **Data Analysts & Architects** working with **SQL & ER modeling** 🔹 **Anyone interested in learning how to properly design databases** for real-world applications --- ### 🔔 **Subscribe for More Database & OOP Content!** If you’re interested in **ER modeling, database design, and SQL development**, don’t forget to: 👍 **Like this video** if you found it useful 💬 **Comment below** with any questions or topics you’d like to see 📢 **Share this video** with fellow developers & database designers ✅ **Subscribe** for more **OOP & database tutorials** --- **📌 Keywords & Tags for SEO Optimization:** #ERModel #Lucidchart #DatabaseDesign #SQL #OracleAPEX #DDL #DatabaseSchema #RelationalDatabase #DataModeling #PrimaryKey #ForeignKey #EntityRelationshipModel #SQLTutorial #OracleSQL #SoftwareEngineering #DatabaseNormalization