Database Design One to Many Relationships: 7 Steps to Create Them (With Examples)

Want to know how to create and diagram a database design one to many relationship? Watch this video to find out.

In database design, one to many relationships are the most common type of relationship between tables. They represent records in one table being related to many records in another table.

If you’re just getting started with designing your database, you may not know how they fit into your design or how to determine which relationships are on to many.

In this video, you’ll learn all about them and how to add them to your design.

You’ll learn:
- What a one to many relationship is in database design
- How to work out what objects or tables you are actually working with
- How to determine which way the database design one to many relationship actually goes
- How to create a standard diagram that shows the one to many relationship between the two tables

The diagram you’ll start creating is called an Entity Relationship Diagram, or ERD for short. It’s a standard diagram used to define a database. There are many software tools out there for doing this, but it’s just as easy to do on pen and paper in this video.

The video breaks this process down into 7 steps, and includes several examples of this process. If you follow these steps with the database you’re trying to design, you’ll be able to define your relationships in no time!

[MrBijaya]

Great tutorial for beginners. Thank you very much for uploading it!

[TheWalterHobbs]

Thank you so You are a great Thanking God for your videos!!! I was confused before!

[SickOfMetal]

Step 4 and Step 7 was very helpful. Thank you

[Greenlight]

Wow it's all clear. Thank you very much.

[Rahul-yuro]

Really good video, can’t thank you enough

[dn]

NIce examples Benn, Audio is slightly low even when I set all voulme to 100%, please check it once

[Gasaky]

Great video! Question: Why you didn't put the "1" crows foot notation on the other end of the line relationship?

[UnboxRacing]

I am going to try Microsoft Visio as this is part of Office 365. Thanks mate

[MrMela]

Great tutorial. I stumble on your blog, but the links to your uTube channel are not working so I had to google it.

[adamweyrah]

Hey Database Star, I was thinking of getting a monthly subscription to your site. Are the concepts taught specific to SQL Server or can they be transferred to something like Postgres/MySQL? Also, do you have recommendations on good books about database design? I kind of struggle with it when it gets complex. I want to learn how to design a database for any sort of application needs I can think of.

[mojoallen]

Drawing my idea on paper was a good idea.

[ganesh]

which tool you have used to create diagram?

[sailajaboreddy]

I am very new to SQL but want to pursue a career as SQL developer.Any path or suggestions please.
Thanks in advance

[mehmedtiro]

I'm confused because my question is:

Can a company have many employees or can an employee work at many companies?

[illmscom]

I found you a little bit too late but please forgive me for my haste and rudeness. I got only two items in my e commerce product list, very simple (those are free from categories and subcategories like color size etc. One is set of books (Romance, Textbook, Suspense, Horror) the other is set of Games. How soon can you reply to me for a complete Schema? Apology again, Thanks.

[houseofmellino]

all these comment lying about learning is crazy, I know data base but have some areas I can improve on and this helps none.i need the actual sql setup and codes to help.

[galihtantra]

why do you whisper & mumble? very very hard to listen.

[AminTeymuriAzar]

what is Tible?! its a Table! not so hard
and its Paper not Piper

[whatappstatus]

Please tell what is the name of this tool