WebDec 13, 2016 · 1 Answer. I'm not familiar with Entity Framework, but if the question is how to add a primary key on a view, it can be done by creating the primary key as disable. Look at the following example, view v_test is defined as a group by query from underlying table. create table t_test (a number); create or replace view v_test (col1, col2, constraint ... WebMaking your primary key similar to the attributes above, Entity Framework can correctly map your each view's row to their own objects. Hence, Entity Framework can now display exactly the same rows your view have. Country Year TotalSales Philippines 2010 20.000000 Philippines 2011 40.000000
Entity Framework: View exclusion without primary key
WebApr 22, 2010 · Add an ADO.NET Entity Data Model to the project and name it MSSQLTipsModel.edmx as shown below: Click Add then choose Generate from database in the Choose Model Contents dialog as shown below: Click Next then select an existing database connection or click New Connection to create one as shown below: Note that … WebFeb 16, 2024 · However, they are different from regular entity types in that they: 1-Cannot have a key defined. 2-Are never tracked for changes in the DbContext and therefore are never inserted, updated or deleted on the database. 3-Are never discovered by convention. Only support a subset of navigation mapping capabilities, specifically: They may never … samsung dryer triclip
Entity Framework Ef With Mvc By (Download Only)
WebMar 29, 2024 · The primary key property of Blog, Blog.Id, and the foreign key property of Post, Post.BlogId, can then be associated with the references ("navigations") between the entity types (Blog.Posts and Post.Blog).This is done automatically by EF when building a simple relationship like this, but can also be specified explicitly when overriding the … WebJun 2, 2011 · There is no way. EF demands unique identification of the record - entity key. That doesn't mean that you must expose any additional column. You can mark all your current properties (or any subset) as a key - that is exactly how EDMX does it when you add database view to the model - it goes through columns and marks all non-nullable and … WebJul 18, 2016 · When including a view in your Entity Model, the model seems to simply use the first not-nullable columns as primary key (as all columns used in the primary key should be non-nullable). Share Improve this answer Follow answered Sep 28, 2012 at 5:31 Moons 3,813 3 49 82 1 What is meant by "the first not-nullable columns"? How many exactly? samsung dryer timer counts down go to 1 min