reverse association

Association and aggregation dependencies in UML class diagrams and their differences This article focuses on the relationship between UML class diagrams. The main types of UML class diagrams include association, aggregation/combination, dependency,

Hibernate Association ing and hibernate AssociationThis document serves as a learning note for the hibernate course for Ma soldiers at Beijing shangxue.com.Hibernate ing is mainly divided into one-to-one, one-to-many, one-to-one, and many-to-many.

Dependency, association, aggregation, combination, and Generalization This article is reprinted article: http://zjzkiss.cnblogs.com/The world is universally connected, so classes in the program world cannot be isolated. UML defines the relationships

This article is reproducedArticle: Http://zjzkiss.cnblogs.com/The world is universally connected, soProgramClasses in the world cannot be isolated. UML defines the relationships between them, that is, dependency, association, aggregation,

One-to-one and one-to-Two Mappings mentioned above are actually the same thing from the opposite perspective. The principle of one-to-many and multi-to-one ing is the same. A foreign key is added at one end to point to one end. That is to say, in

Use of the ios CoreData framework, add, delete, modify, and query context data, association between tables, 1-to-many, 1-to-1, predicate query, multi-table join, ioscoredata Here is just code, because the effect of inserting images into a blog is

Hibernate Association ingThis document serves as a learning note for the hibernate course for Ma soldiers at Beijing shangxue.com.Hibernate ing is mainly divided into one-to-one, one-to-many, one-to-one, and many-to-many. At the same time, it must

Getting started with Hibernate framework Association ing and hibernate framework ing Ing is to map the ing relationship to the database, which is one or more references in the object model.1. Configure one-way multi-to-one Association Define a Dept

IosCoreData framework is used to add, delete, modify, and query context data, association between tables, 1-to-many, 1-to-1, predicate query, and multi-Table connection.   -(Void) viewDidLoad {[super viewDidLoad]; [self _ creatTable]; // insert data

The reverse proxy service of Nginx server is one of the most important functions, and the reverse proxy service can derive many important functions of Nginx server, such as the load balance described later. This blog we will first introduce the