Does anyone know if there is a quicker way of editing a record that has foreign keys in a table (in sql server).. i will explain.. i have approx 5 tables that have there own ID but are linked together using a foreign key...
Hence i needed to change the foreign key (the contract number in my case), but i had to copy each record to a new record and
I am using SQlServer 2008, and an extract of some datatables is displayed below:
ItemId (PK) - (Compound key of 2 columns)
VoterId (PK) - (Compound key of 3 columns)
I have the following relationships defined:
User.Id -> UserItems.UserId
I have an issue with deletion in Entity Framework. In short, EF explicitly tries to delete an entity from the database even though I've explcitly configured EF to use cascading deletes in the database.
I have three entity types, MainEntity, EntityTypeA and EntityTypeB. EF has been configured to use cascade deletion when deleting Entity
I'm using a soft delete in my django admin, done like this.
The issue is that when I delete a foreign key item, that it doesn't seem to trigger the deletes for all the items it's linked to. Or maybe it does but it's not running the custom def delete I have on my model.
-If I delete a person then they are soft-deleted, but the related account is l
No flame wars, please!
We''re planning a move from a non-relational system to
a relational system. Our choices have been narrowed to
Oracle and DB2. Since we''re moving from non-relational
to relational, then we''re not currently using any
relational-type operators. So I expect the end result to
use simple, SQL standard commands and queries.
SQL has always had a great feature: cascading deletes. You plan it in advance and when it's time to delete something, BAM! No need to worry about all those dependent records.
However, nowadays it's almost taboo to actually DELETE anything. You flag it as deleted and stop showing it. Unfortunately, I haven't been able to find a solid solution to do
Can I know if a database have DELETE ON CASCADE with a query?
Solution Yes. Just query the INFORMATION_SCHEMA
SELECT * FROM information_schema.REFERENTIAL_CONSTRAINTS
Or more specifically
-- This query will list all constraints, their delete rule,
-- the constraint table/column list, and the referenced table
This question is probably a long shot. I can't figure out the errors I'm getting on my core data project when I save after I delete an entity. My .xcdatamodel can be seen at:
I have two main entities that I work with, an Outfit and an Article. I can create them with no problem but when I delete them I get the follow error
In Android 4.2, using SQLite 3.7.11, when I delete a row from the Quizzes table, who's schema is below, the corresponding rows in the QuizQuestions table are not deleted.
I can't figure out what's wrong. I have tried putting
db.execSQL("PRAGMA foreign_keys = ON;");
before and after the create table statements.
Create table statements:
I'm using Entity Framework 4 and have a one-to-many relationship between a parent and child entity. I'm trying to delete a child using the parent repository by removing it from the parent's children collection:
public virtual void RemoveChild(Child child)
When I try to save the changes I ge