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The Basics of Creating Tables in SQL

Your First Table
CREATE TABLE basics
Entity Relationship Diagrams (ERD)
10. Example of ERD
Summary

Instruction

Amazing! You are a fast learner!

The SQL statements (CREATE TABLE) are, of course, used by developers when they work with databases. However, it's difficult to understand this code when you are working with a lot of complicated tables. Sometimes, you just want to have a general idea of your tables without studying them in detail. In such a case, you may use an Entity Relationship Diagram (commonly abbreviated to ERD). ERDs look like this:

LEAD

As you can see, they are much easier to understand at first glance than SQL statements are.

Exercise

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