Entity Relationship Diagram (ERD) Tutorial - Part 1

Learn how to build an entity relationship diagram from scratch. We cover the basics of entities, attributes, and cardinalities to help you visualize your database. You can use Lucidchart to automatically generate code for your database management system and increase your efficiency.

Entity Relationship Diagrams are comprised of 3 main categories: entities, attributes, and relationships. Entities are objects or concepts that are associated with important data—like a customer, order, or product. Attributes represent properties or traits of an entity, such as a customer’s phone number or home address. Relationships demonstrate the link between entities.

Another main aspect of of ERD's is cardinality, which further defines the relationship between entities in a numerical way. Certain symbols signify the minimum and maximum relationship between different entities.

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Timestamps
0:00 Introduction to ERDs
0:41 What is a database?
1:25 Entities and attributes explained
2:24 Understanding relationships
2:44 Cardinality and numerical context
3:15 Customer and order relationship example
4:35 Order and product relationship example
5:34 Exporting diagrams to a database

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Learn more at: training.lucid.co
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