begintransaction sql

A transaction (Transaction) is an important feature in the operational database that allows you to book a single, or a series of SQL statements, and then execute them together, and, in the course of execution, you can roll back all the changed

A transaction (Transaction) is an important feature in the operational database that allows you to book a single, or a series of SQL statements, and then execute them together, and, in the course of execution, you can roll back all the changed

Database access (DAO)YII contains a data access layer (DAO) built on top of the PHP PDO. DAO provides a unified set of APIs for different databases. Where ActiveRecord provides an interaction between the database and the model (M,model in MVC),

PHP's YII framework uses database configuration and SQL Operations Examples tutorial, yii example Tutorial Database access (DAO)YII contains a data access layer (DAO) built on top of the PHP PDO. DAO provides a unified set of APIs for different

Database access (DAO)YII contains a data access layer (DAO) built on top of the PHP PDO. DAO provides a unified set of APIs for different databases. Where ActiveRecord provides interaction between the database and the model (M,model in MVC),

Database Access (DAO) Yii contains a data access layer (DAO) built on PHPPDO ). DAO provides a unified set of APIS for different databases. activeRecord provides interaction between databases and models (M, Model in MVC). QueryBuilder is used to

This article describes how to use the database configuration and SQL operation instance tutorial in the PHP Yii framework. Yii supports binding multiple databases. This article provides an example of the use of various query statements in Yii, for

Tutorial on Database Configuration and SQL operations in the PHP Yii framework, and tutorial on yii instances Database Access (DAO)Yii contains a data access layer (DAO) built on php pdo ). DAO provides a unified set of APIS for different databases.

Hibernate native SQL query, Hibernate native SQL Recently, a more complex query was made, and the basic query of hibernate could not meet the requirements. Therefore, we had to use the native SQL query provided by hibernate. Make a summary by

 1. Concurrency consistency Common concurrency consistency problems include: Lost modifications, non-repeated reads, dirty reads, and Phantom reads (Phantom reads are often classified as non-repeated reads in some materials ).1.1 lost