i\'ve been trying to solve a problem but got stuck now. I have 2 entity classes/tables Order and OrderItem. OrderItem has 1 Order and Order has 1..* OrderItems.
I have a vacation approval model that has_many :entries is there a way that if I destroy one of those entries to have the rest destroyed? I also want to send one email if they are, but not one for eac
I\'m trying to implement a basic tagging system with hibernate. The problem is that everyone has been subclassing Tag to make the mapping easier. I want to keep my Tag object agnostic to how it\'s use
I have two entities: patient and checkpoint. Patient has attributes such as DOB, n开发者_如何学JAVAame, ID, etc.
Given a mysql-database with tables as follows: author: +----+----------+ id | name| +----+----------+ 1| John|
I\'m a bit of a MYsql newbie and I\'m stumped as to how to do this.I think I have to insert my results into a TEMPORARY TABLE, but I\'m not sure.
Here is an extract of the schema I actually have Software: columns: title: type: string(255) id_publisher:
I have two MySQL tables describing data that can be extended into subclasses, one that describes the parent class data and another one describing metadata fields as one-to-many relationships.
I am creating an app that navigates through multiple levels of one-to-many relationships. So for example, pretend that the CoreDataBooks code sample starts with a list of genres, you click on a genre
Assume A is a parent table with many B records.Essentially I need LINQ to S开发者_运维问答QL to generate this query:
加载中,请稍侯......