I have a 1..* relationship between User and Post. (one user has many posts) Post has a FK called \"UserId\", which maps to the \"UserId\" field on User table.
开发者_Go百科I\'ve been trying to find the answer to this question here. Several people seem to ask similar things, but I don\'t get the answers. I have an EF entity with a bunch of child entities (on
I am using EF4 CTP 5, CodeFirst. Please see my classes first: public class Guest { [Key] public Guid GuestID { get; set; }
I\'m using code first and turned off the cascade delete for all foreigns keys using the following statement:
In a Core Data model, entity A has a relation to entity B with the delete rule set to Cascade. Is object B immediately deleted when the [context deleteObject:A] is called, or does Core Data wait for t
Let\'s assume the following objects as tables in SQL: Companies Employees (refers to companies) Meetings (also refers to companies)
This is more a question about what\'s the best practice in implementing this. I have a FileSystemWatcher which should inform me about User\'s changes on files and folders. Also subdirs are watched. I
I am using sql server express 2008 with mmse. i have set up a foreign key constraint between to tables and set the on delete constraint to \"set null\".
I have an object mapped with hibernate that contains an id and a collection. At some point in time when the object contains items in it\'s collection I want to do obj.setCollection(new ArrayList()) an
I have the following mapping file for \'Photo\' objects (edited for brevity): <hibernate-mapping ... default-access=\"property\" default-cascade=\"none\" default-lazy=\"true\">
加载中,请稍侯......