relationship

I have three tables: products: id|name|description|slug|category_id|... reviews: id|product_id|review_text|name|email|... review_rows id|review_id|criteria|rating the review table stores the review text, writer of the review and has a foreign product_id key. The review_rows table stores the ratings for different criteria like: ---------------------------------------- | id | criteria | rating | review_id | ---------------------------------------- | 1 | price | 9 | 12 | ---------------------------------------- | 2 | service | 8 | 12 | ---------------------------------------- | 3 | price | 6 | 54

I'm using EF6 Code First. I have two classes: public class Player { [DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)] [Key] public int Id { get; set; } [Required, MinLength(2, ErrorMessage = "Player name must be at least 2 characters length")] public string Name { get; set; } [Required] public int TeamClubId { get; set; } [Required] public int TeamNationalId { get; set; } [Required, ForeignKey("TeamClubId")] public virtual Team Club { get; set; } [Required, ForeignKey("TeamNationalId")] public virtual Team National { get; set; } } And: public class Team { [DatabaseGenerated

DISCLAIMER: this is a copy paste from an older stackoverflow post that isn't available anymore, but I have exaclty the same problem, so it seemed appropriate to repost it as it was never answered. I have a stored procedure that will return 4 result sets (contacts, addresses, email, phones) which is populated into a dataset. I would like to use AutoMapper to populate a complex object. public class Contact { public Guid ContactId { get; set; } public string FirstName { get; set; } public string LastName { get; set; } public List<Address> Addresses { get; set; } public List<Phone> Phones { get;

How to add conditions to the relation? For example, we have object Pet @Entity public class Pet { @ PrimaryKey int id; int userId; String name; String type; // other fields } and object User public class User { int id; // other fields } For getting user with pets we make object public class UserAllPets { @Embedded public User user; @Relation(parentColumn = "id", entityColumn = "userId", entity = Pet.class) public List<PetNameAndId> pets; } How is possible to get user with pets by type? Only dogs or only cats Here is dao class: @Dao public abstract class UserDao { @Query("SELECT * FROM `users`"

I'm not quite sure if I understand the associate method in Laravel. I understand the idea, but I can't seem to get it to work. With this (distilled) code: class User { public function customer() { return $this->hasOne('Customer'); } } class Customer { public function user() { return $this->belongsTo('User'); } } $user = new User($data); $customer = new Customer($customerData); $user->customer()->associate($customer); I get a Call to undefined method Illuminate\Database\Query\Builder::associate() when I try to run this. From what I can read, I do it exactly as is stated in the docs. What am I

Starting from an existing (SQLite) database with foreign keys, can SQLAlchemy automatically build relationships ? SQLAlchemy classes are automatically created via __table_args__ = {'autoload': True} . The goal would be to easily access data from related tables without having to add all the relationships one by one by hand (i.e. without using sqlalchemy.orm.relationship() and sqlalchemy.orm.backref ). vvladymyrov [Update] As of SQLAlchemy 0.9.1 there is Automap extension for doing that. For SQLAlchemy < 0.9.0 it is possible to use sqlalchemy reflection. SQLAlchemy reflection loads foreign

I'm currently playing with ORMlite to make a model with tables and relationships. One relationship is a many-to-many relationship. What's the best way to implement that? To be more concrete: Let's say I've got these two tables Product id brand Purchase id A purchase can have several products and one products can be in several purchases. Using ORMLite I could have a @ForeignCollectionField in each model but I don't think it would work. The only valid solution I see is to make a third table Product_Purchase to link Product and Purchase with many-to-one relationships. What do you folks think?