This lesson provides a complete, concept-clear foundation on Data Models and the Entity-Relationship (ER) Diagram Model, covering data modeling concepts, ER components, keys, relationships, and cardinality constraints.

Designed to help students understand HOW databases are planned and structured before implementation, using clear diagrams, symbols, and real-world modeling examples.

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What’s Included

💡 Full Data Models & ER Diagram Slide Deck
💡 Detailed Teacher Notes & Teaching Guide
💡 Complete Assessment Test
💡 Full Answer Key
💡 Visual ER diagrams, symbols, and modeling examples
💡 Ready for in-person, online, or hybrid classrooms

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WHAT STUDENTS WILL LEARN

✏️ What a Data Model is and why it is used
✏️ Types of Data Models
✏️ NoSQL models
✏️ Purpose and use of the ER Model
✏️ Entities, entity sets, and entity instances
✏️ Strong vs Weak entities
✏️ Attributes and their types
✏️ ER diagram symbols and notation
✏️ Keys (Primary, Candidate, Super, Alternate, Foreign, Composite)
✏️ Relationships (binary, ternary, recursive)
✏️ Cardinality constraints (1:1, 1:M, M:N)
✏️ How to design ER diagrams step-by-step

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