I\'m having some problems while implementing on one class two different types of relations to another class.
Returning to classic mongodb example (posts and users)开发者_如何学运维: Posts: {title: \"Greetings\", body:\"Hello world\", userId:12345}
Taking this example: One table of persons [id, name]. One table of colours [id, colour]. One table of associations. (which colours are liked by which people) [id,person_id,colour_id].
I have tried to create one-to-many connection, but it works very strange. I suspect that class User has one Country, and class Country has many Users.
After spending a 开发者_运维知识库few months pondering how i was going to \"JOIN\" tables together which share same named columns and outputting them in a format which can be searched and paged i came
I have a web application with two tables to track user shares.Shares must be approved and so they go through a series of status changes.Each status change is recorded in the log and timestamped. The c
I have these ER relations: Person ID_PERSON NAME Animal ID_ANIMAL NAME Person_animal ID_PERSON ID_ANIMAL DATE_OF_BUY
class Task include DataMapper::Resource has 1, :list, :through => Resource end class List include DataMapper::Resource
I have 开发者_开发百科a form changeed the properties of my object CUSTOMER. Each customer has related ORDERS. The ORDER\'s table has a column customer_id which is used for the mapping. All works so fa
I am not very experienced with Hibernate and I am trying to create one-to-many mapping. Here are relevant tables:
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