EF Core 6 🚀 Database First / DB First (Entity Framework Core 6 / .NET 6)
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- Опубліковано 23 лип 2024
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Table of Contents:
00:00 EF Core 6 🚀 Database First
01:55 SQL Server Database Overview (SQL Server Management Studio)
04:05 Create an ASP.NET Core Web API Project
04:50 Install NuGet Packages
06:04 Scaffold the DbContext
08:44 Check the created Models
10:37 Register the DbContext in the Program.cs
11:16 Create an empty API Controller
13:42 First Test of the Controller
15:18 Include Related Entities
17:00 Scaffold after making changes to the Database
19:01 DB First Alternative?
21:09 Use the dotnet CLI
23:21 Closing Words
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Your videos are incredibly practical and easy to understand. Thank you so much for sharing such valuable content!
Was waiting for this. Thank you.
Great coincidence; this is exactly what I am looking for right now after watching an older video of yours last night, about WebAPI & EFCore.
Perfect! Glad I could help! 😄
I was eagerly waiting for db first approach. thanks alot Patrick.
Love your videos. Sometimes your only choice is DB First when your dealing with an existing database. I have had success using partial classes in a separate metadata and partial class cs files with the annotations in a Metadata.cs, that way your data annotations don't get wiped out when you run another scaffold-dbcontext command.
I used to work for a guy who insisted we would design the database-first. In that way he, the owner/business analyst/database administrator, could modify the structure as he imported customer data - and that is is more efficient. Essentially, he wanted control. So I scaffolded it initially. We were developing in the production database.
Thanks patrick God a lot of love from INDIA I have leant so many things in dotnet core 6 for my work i love your tutorials easy and fast keep it up
Thank you so much for a nice video. I needed to remind myself DB-first approach. U the best
You're so welcome!
Another good learning material from you! Thank you for sharing your knowledge!
Glad I could help! Thanks for your feedback, Jack! 😊
@@PatrickGod please can you provide SQL for creating database with values ?
Perfect; thanks a lot.
i wating for this conten for a long long time. finally ;)
Wow.. este fue un excelente video, gracias!
Thanks Patrick for this awesome video.
I hope you create a video about using EF Core Power Tool
woooo finally!! :)
more topics about code first, but less for database first which is more commonly used , your video is very helpful
Thanks for this video, its simple and well explained, can you please share how can we take this scaffold database context and migrate to code first for any further changes to database, like adding new tables or changes to existing tables etc.
It's just awesome
Great video.
thank you very much!
Great content, thanks!!
Glad you liked it! Thanks for your feedback! 😊
Legend!
Thank you!!!
Hello, as usually it is very usefull. I got the same problem of object cycle with our oracle database but the swagger is completly stucked in our case. I set the JsonIgnore and it's OK.
Hey Patrick, thanks for making another amazing video, I do have a video request, can you make a series on Dapper
Dapper would be great to learn 🙏
Very nice video. I just want to know how we can call the stored procedure as well using the same code above.
Just as a note, the classes used for the automated build of these classes are all defined as public partial. That means that any extended properties and functionality can be attached to the model classes. I tend to do this in a folder called 'Extenders'.
With Dapper, one issue is that is does not provide "concurrency checking". Can you address how to handle "concurrency issues" that could arise when using Dapper to do UPDATE, INSERT, DELETE operations ?
That was helpful
Hi Patrick, would be interested to if you can show us demo on building api using Db first ef core as i would like to expose the data from oracle database , basically to a thrid party using basic authentication.
Thank you!!
You're welcome!
Hi Patrick.
Will you be making a tutorial on dotnet Web API Versioning and configuring Swagger for versioning ?
What about Editor like earlier .net framework 4.7.2 EF 6. editor? How to use store procedure based approach with .net COre EF? If my table consists for billions of records, I do not want to use table based approach? Any simple editor available?
Thanks God. In both senses. :)
You're very welcome! 😄
do you have any idea how to create multiple database base on tenant or subdomain? i mean if we select tenant/subdomain use database intended for that. thanks
Can you make a video with a practical/real-world example of EF such as using views, and complex relationships with multiple tables, rather than using simple DB schema? That would be much helpful.
Have u found a tutorial that covers more real world examples?
@@shivakumarnarayanan1165 Unfortunately no. Most YT tutorials are not covering real-world examples but just simple/basic ones. If I have one, I WILL subscribe to their channels and give them thumb-ups FOR SURE. Anyway, I wish to find one on GitHub or somewhere.
How do I scaffold using IdentityDbContext instead of DbContext because I want to use some of IdentityDbContext features
What to do if table columns in database are changed later?
After scaffolding I want to be able to add a new column to Product table following code-first and add-migration. Is that possible?
Scaffold-DbContext command with sybase database for NET 6 Database First Approach ?
thanks helpful vid
Glad you liked it!
Nicely informative, thank you.
I think the big thing I take from this... you touch on this a little throughout but especially at the end... is the fragility of the link between code and database. For me, this makes me ask... do I *want* the code to know about the database? Because someone's going to change the database without telling anyone, and it's going to break the application.
Okay, there needs to be *some* knowledge between the two, just for the solution to work, but we should probably aim for that knowledge to be minimal.
Hi thanks for the vid,
can you have 2 db connections ?
Thanks for creating this Patrick. Really helpful. Don't most high revenue companies already have existing databases? Wouldn't DB first approach be the most common way anyways? Code first is usually for teaching or for creating brand new databases. I seriously doubt that most companies are allowing people to create a new database every time they need software written.
absolutely
patrick god, could you help me, making a video explaining how to save multiple files with inputfile but save them in a local folder and show that local path in the database, it would be very helpful since I've been trying for a long time...with blazor webassembly
I have a existing database with tables but those tables will not be part of the project. Should I use code first or database first but the requirement is to use that database. I was wondering if I use code first will it delete the other tables??
What does virtual keyword does with the attributes?
what about the username and password>? how does that is input into the PM console to be able to retrieve the context?
what if I add another table in the database, how can I update the scaffold to insert the new table?
How do you create a view with code first?
Using database first approach can we create a new database which has the schema of existing database? if that's possible can u make one vedio?
Where can I get the DB sql file?
Now let work with session to build simple admin web, tks you very much
Interesting video. What about Stored Procedures, what would be the best practice here? Migrate them to C# methods?
Hey Heinz, it seems this might be a good option. EF Core seems to be very limited regarding stored procedures. For instance you can only return Entities and you can't use Joins in your stored procedure according to the documentation. Hope this helps! Take care, Patrick
I personally would create custom entities to receive the output of stored procs that return data and then use the open source package Dapper to call execute the procedures.
You can still use your DbContext connection to execute the procedures. For stored procs that perform operation but don't return anything, Execute with Dapper again using your DbContext connection.
You don't get the benefits of caching that EF gives you but compared to the huge boost in performance, just remember and be aware that you should recycle the DbContext before doing an EF query where the execution of your stored proc may have altered the data that was previously retrieved by EF.
If everything your app needs to do with the DB is already written as views and stored procs, consider had rolling your entities and use Dapper instead of bringing EF into the mix. Your users will appreciate the performance difference.
Is an updated version of the Full Stack class coming out soon using .NET 6 and EF6?
It's here: ua-cam.com/video/K23uJdMiEpk/v-deo.html Enjoy! 😄
so sNice tutorialt like that
patrick a video about code first migration minute 19:47 please thank you very much
10:30 Why is class User defined as virtual : public virtual User User {get; set;} ???
Need Get Data from Multiple Tables with join Query, DB First Approach, MVC, Not Repository Parrten
🎉🎉🎉🎉❤❤❤
Mine looks notNice tutorialng like the way you guys started it would be amazing if soone told how to get the multiple tracks
wheres the file for the database table
This is not a good reason to use code first , we can set a setting just one place in program.cs file:
builder.Services.AddControllersWithViews()
.AddControllers(options => options.JsonSerializerOptions.ReferenceHandler = ReferenceHandler.IgnoreCycles);
11.20
hahsdhahah good
This guy really has a “God” complex. 😂😂😂