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Add new column with foreign key constraint in one command
... new column that will be a foreign key. I have been able to add the column and the foreign key constraint using two separate ALTER TABLE commands:
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What is the “owning side” in an ORM mapping?
...-directional relations.
The mapping would create not only tables PERSONS and ID_DOCUMENTS, but would also create a third association table PERSONS_ID_DOCUMENTS:
CREATE TABLE PERSONS_ID_DOCUMENTS
(
persons_id bigint NOT NULL,
id_documents_id bigint NOT NULL,
CONSTRAINT fk_persons FOREIGN KEY...
Map enum in JPA with fixed values?
...m using JPA. I especially want to set the integer value of each enum entry and to save only the integer value.
9 Answers
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Using querySelector with IDs that are numbers
From what I understand the HTML5 spec lets you use IDs that are numbers like this.
5 Answers
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Passing variables through handlebars partial
I'm currently dealing with handlebars.js in an express.js application. To keep things modular, I split all my templates in partials.
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Set “Homepage” in Asp.Net MVC
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Look at the Default.aspx/Default.aspx.cs and the Global.asax.cs
You can set up a default route:
routes.MapRoute(
"Default", // Route name
"", // URL with parameters
new { controller = "Home", action = "Index"} //...
What's the difference between identifying and non-identifying relationships?
...t been able to fully grasp the differences. Can you describe both concepts and use real world examples?
15 Answers
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How to delete an object by id with entity framework
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Why Attach? Why not just Remove and SaveChanges?
– runeks
Sep 25 '18 at 12:45
3
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A migration to add unique constraint to a combination of columns
...mns. i.e. for a people table, a combination of first_name , last_Name and Dob should be unique.
6 Answers
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Storyboard doesn't contain a view controller with identifier
... edited Aug 9 '15 at 14:03
Andy Weinstein
2,38033 gold badges1515 silver badges2121 bronze badges
answered Jul 22 '12 at 23:29
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