Entity framework join two databases

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WebDec 27, 2024 · Get your data with entity framework Map to DTO objects with the common properties using automapper Merge your lists with Range add. Duplicate data We live in a world were nosql solutions are used alongside RDBMS solutions. it might be that you create a common db (RDBMS or nosql or whatevers suits you), and duplicate your data there. WebMay 4, 2024 · So basically the steps for adding more DbContexts is to: Create a DbContext Class Create a Connection string for that DbContext in appsettings.json Add the DbContext to your configured services in Startup.cs Setup the DbContext in the controllers that will use it.

Configure multiple database Entity Framework 6 - Stack Overflow

WebI possess strong technical experience in MVC, ASP.NET, C#, VB.Net, ADO .NET, Entity Framework, LINQ,SSIS, SSRS. Proficient technical experience in Services like WCF, Web Service, Web API. During ... Webyou can create a view or a stored procedure, your sql statement can then make cross db query just make sure your credentials can DML or DDL on both db. otherwise try the … inspired property management tenant portal

Entity Framework Core and Multiple Database Providers

WebMay 24, 2024 · Let’s start. Using Multiple Databases to Support Migrations If you open our project that you can download from our source code repository, you can execute initial … WebAug 21, 2024 · The default DbConfiguration instance was used by the Entity Framework before the 'MySqlEFConfiguration' type was discovered. An instance of 'MySqlEFConfiguration' must be set at application start before using any Entity Framework features or must be registered in the application's config file. WebJul 25, 2011 · For an example of developing an EF Code-First application that targets multiple databases, see the article "Entity Framework Code-First support for Oracle, MySQL, PostgreSQL and SQLite". When ... jesus with crown of thorns svg

Using Multiple Databases in ASP.NET Core via Entity …

Using multiple Databases with single DbContext and Entites and ...

WebJoin on tables from different DbContext - model first 2016-03-29 19:41:58 2 788 entity-framework / entity-framework-6 WebNov 11, 2024 · Step 1 First of all, create two contexts that refer to two different databases. For creating the Entity Framework model click here. In this example, I use the following two tables of two different … jesus with crown of thorns clip artWebCustomCode contains lots of views and stored procedures that joins to Vendor and LogData. then create a stored procedure to perform the desired queries (which can join tables from separate databases). From there you should be able to expose and execute the procedure from Entity Framework to perform the desired functionality. jesus with children picture

"WebAug 23, 2024 · Database migrations are one of the best features of Entity Framework Core. A database migration allows you to change your object model and generate the steps to alter your database. We need to create migrations for each new database provider we include in our solution. " - Entity framework join two databases

Entity framework join two databases

Configure multiple database Entity Framework 6 - Stack Overflow

WebMay 30, 2024 · For DB operations, you will have to create a Web API and create multiple DbContexts for multiple DB connections. @Rahul Well that was what I have done with the "WebAssembly ASP.NET Core Hosted" meant. My Project structure is now Blazor.Client , Blazor.Server and Blazor.Shared Lib. So now I have the Startup.cs in the Server Project …

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WebJul 15, 2015 · You can perform a join on tables across two different contexts like this: public IQueryable GetRegisters (int activityID) { var activityRegisters = ActivityDBContext.ActivityRegisters.Where (x => x.ActivityID == activityID x.IsActive == true).OrderBy (x => x.ActivityRegisterID).ToList (); var roomIdsFromActivityRegisters ... WebJun 6, 2013 · Update. As per your comment, EF wasn't able to parse a combined Expression tree across 2 different contexts. If the total number of records in the tables is relatively small, or if you can reduce the number of records in the join to a small number of rows (say < 100 each), then you can materialize the data (e.g. .ToList() / .ToArray() / …

WebOct 7, 2024 · Currently I have a problem in join tables that are defined inside two different data bases (where the two databases are inside the same server) (I have two .edmx files). For example if I want to join tables I am performing the following query:-. public ActionResult AutoComplete(string term) { var tech = repository.AllFindTechnolog(term).Take ... WebFeb 4, 2014 · To connect to multiple database in runtime, I created another constructor that takes connection string as parameter like below in same file Model.Context.cs. public WMSEntities (string connStringName) : base ("name=" + connStringName) { } Now I added other connection string in Web.Config for example.

WebMay 14, 2015 · The bets solution is to have one DbContext with the two entities with. This way EF can easily join between them. You can create 2 more, distinct entities with just the fields you want. If your concerned about maintaining duplicative types, consider creating interfaces between them (SOLID's interface segregation principal). WebSep 1, 2024 · The LINQ Join operator allows you to connect two data sources based on the key selector for each source, generating a tuple of values when the key matches. It naturally translates to INNER JOIN on relational databases. While the LINQ Join has outer and inner key selectors, the database requires a single join condition.

WebMay 14, 2024 · The select I want to do in Entity Framework would be in SQL: SELECT ai.id, ai.title, ai.description, ai.coverimageurl FROM app_information ai INNER JOIN app_languages al on al.id = ai.languageid WHERE al.languagecode = 'es' …

WebAug 23, 2024 · For example, the Entity Framework Core library supports over ten popular database engines, including Microsoft SQL Server, Oracle, PostgreSQL, MySQL, and … inspired property management liverpoolWebMar 29, 2024 · EF Core relationship mapping is all about mapping the primary key/foreign key representation used in a relational database to the references between objects used in an object model. In the most basic sense, this involves: Adding a primary key property to each entity type. Adding a foreign key property to one entity type. jesus with crown of thornsWebSep 30, 2015 · There would be no other way to just use one DbContext for multiple databases without specifying the database you are trying to connect to. The problem with what you are trying to do is that the entities under the context would need to exist in both databases. ... Using entity framework on multiple databases. 1. How to use EF … jesus with crown of thorns paintingWebSep 20, 2016 · No, you can't do that with EntityFramework (neither 6.x nor Core). A DbContext is per database and you can only do joins within the same DbContext. You could create a view and map the view to the models you needs, but iirc. mapping of views is still on the roadmap for EntityFramework Core. May work with EntityFramework 6.x … jesus with children statueWebApr 17, 2010 · 4. I actually did find a way to make an EF model span multiple databases if your database supports Synonyms. Basically you setup Synonyms to Database2 on Database1, create separate edmx models for each, then merge the XML. I posted the exact steps to make an edmx file span multiple databases here if you're interested, along with … jesus with disciples images hdWebJan 15, 2013 · If the databases are on the same server, then all you need to do is use a DbCommandInterceptor. As an example, if I attach a DbCommandInterceptor to MyContext, I can intercept all command executions and replace the specified table (s) in the query with my full-db paths. jesus with cowboy bootsWebHandled multiple roles - Technical Lead, Onsite Coordinator, Developer and Tester. Areas of Expertise: RPA Tools- Automation Anywhere and UiPath Web Technologies- ASP.Net, MVC,Angular JS ... inspired property management london