What is ER diagram?
An entity-relationship diagram: a picture of your tables and the lines showing how they point at each other.
Learn it properly
Chapter 7: Omar's Pantry
What databases are and how data is stored in them
Read chapter 7 →An entity-relationship diagram: a picture of your tables and the lines showing how they point at each other.
What databases are and how data is stored in them
Read chapter 7 →