Learn how to create an Entity Relationship Diagram in this tutorial. We provide a basic overview of ERDs and then gives step-by-step training on how to make an …
Original source
Entity Relationship Diagram (ERD) Tutorial – Part 1
Learn how to create an Entity Relationship Diagram in this tutorial. We provide a basic overview of ERDs and then gives step-by-step training on how to make an …
Original source
29 responses to “Entity Relationship Diagram (ERD) Tutorial – Part 1”
One Customer only need one Tutorial like this 😀 Incredible good explanation!!!
perfect
Thanks guys I was literally in need
Your set of videos is piece of gold. Thanks
lucidchart is such a great product, also great at advertisement
Can you do a video on creating a complicated ERD from the actual business rules? As if a company hired you to create a database and they give you a rough over view of the entity relationships. I am a student at SUU and would appreciate the extra practice very much!
2:58
what is name aplication ?
Lucidchart, pls explain how one product can have no order? Only when a customer places an order, then only product will get delivered. Pls explain my ambiguity
i don't understand .. how consumer could have no order ?
Very well explained video.
Thank you
BRAVO RE MALAKA TAYLOR EISAI MEGALOS PAIKTIS
شرح متكامل عن مخطط قواعد البيانات ..
خذت فكرة عامة لاكن الفكرة الي عندي خابر ان التمثيل على المخططات يكون على شكل مستطيل للكيان و معين للعلاقة ودائرة للخواص
هالشي ضيعيني نوعا ما لاكن جودة الشرح جدا ممتاز وسهلة تاخذ الفكرة على الماشي
اتمنى يكون لها شرح بالعربي(دبلجة)
Thanka
Hey!! Thank you very much!! Really it was a great video, you were able to explain it with the best (and easy) way… I will be attentive on your new videos. Thank you!!
Why do lecturers over explain things? rather than just getting to the point!
Great job explaining! I have interviews coming up soon and need to brush up on relational database concepts. This has been very helpful.
Actually, a true ERD is not a direct 1 to 1 mapping to a table as explained here. As an example an Entity can be mapped out to more than 1 table and in fact may not even be a table. That point is missing in this simple video. However, if you want to go with the assumption that your 'entities' are going to be tables than sure this information is fine.
This guy explained in 6 minutes and 57 seconds what it took my prof a week to explain. Thank God for this video.
A customer isnt a customer if he/she doesnt buy anything though so wouldnt the relationship be 1 to many?
nice bro , thanks for learn
Thanks alot helpful tutorial keep on sharing more. Already subscribed 😉
thank you for your Tutorial. Very helpful !
Just a quick errata for this tutorial. A purchase is a transaction. Think of it transferring zero money to another bank account, that isn't allowed as it is a bad practice. So the correct ERD cardinality should be "one or many". To be consider a costumer you should at least have one order and the order should at least have one product.
why u not take the customer and product releation.
thank you sir!
This is not ER model this is R model
Awesome. Thanks for the helpful explanation. It's a lot more helpful than lectures and power point slides. We use Visio in class, but the app you use looks more simple and easier to use.