Transaction is a program execution unit that accesses and may update various data items in the database; a transaction should have four attributes: atomicity, consistency, isolation, and persistence atomicity. A transaction is an indivisible unit of work. All operations included in the transaction are either done or none of them are done. Consistency. A transaction must change the database from one consistency state to another. Consistency and atomicity are closely related. Isolation. The execution of a transaction cannot be interfered with by other transactions. That is, the operations and data used within a transaction are isolated from other concurrent transactions, and transactions executed concurrently cannot interfere with each other. Durability. Continuity, also known as permanence, means that once a transaction is committed, its changes to the data in the database should be permanent. Subsequent operations or failures should not have any impact on it. Distributed transactions: Participants, resource managers, transaction managers, etc. of distributed transactions are located on different nodes. These different nodes cooperate with each other to complete a task.
1. About PHP + 10 recommended articles on MySQL
##Introduction: Transaction is an access to and possibly update of the database A program execution unit for various data items; transactions should have four attributes: atomicity, consistency, isolation, and persistence atomicity. A transaction is an indivisible unit of work. All operations included in the transaction are either done or none of them are done. Consistency. A transaction must change the database from one consistency state to another. Consistency and atomicity are closely related. Isolation. Execution of a transaction...
2. php + mysql distributed transaction (xa)
Introduction: Transaction is a program execution unit that accesses and may update various data items in the database; A transaction should...
3. Convert to php + mysql distributed transaction (xa)
Introduction:: This article mainly introduces the conversion to php + mysql distributed transaction (xa), students who are interested in PHP tutorials can refer to it.
4. One yuan cloud purchase complete source code cloud purchase CMS system with Android and ios mobile client cms mobile client cms monitoring mobile client 12306wp system mobile client
Introduction: Mobile client, cms system: One Yuan Cloud Shopping complete source code Cloud Shopping CMS system with Android and ios mobile customers End: A set of one-yuan cloud shopping CMS source code that looks good. The source code package comes with Android and iOS mobile clients. The mobile clients need to be decompiled by yourself. We won’t introduce the functions and other details here. You can download it yourself and slowly test it to understand. The following demonstration picture is a screenshot of the personal test. Source code installation instructions: The server space needs to support PHP + MySQL1. Completely upload the source code to the server space. 2. Use phpmyadmin to install the root directory
5. Use How can PHP + MySQL develop Dockerized applications?
Introduction: How to develop Dockerized applications using PHP + MySQL?
6. Summary of some points to note in PHP development_PHP tutorial
Introduction: Some points to note in PHP development Summarize. The current standard system for using Linux systems is Linux + Nginx + PHP + MySQL. This configuration is used by more and more large companies. When it comes to different configurations, it is a company's protocol, such as hanging
7. PHPnow Chinese suite package 1.5.4 released (with download link)_PHP tutorial
Introduction: PHPnow Chinese suite package 1.5.4 released (with download link). The installation of the PHPnow Chinese suite package is very simple. You only need to unzip PHPnow and initialize it to get a standard PHP + MySQL server environment. Then you can directly install Discuz! and other programs
8. "Log in with user password in phpMyAdmin" supplement_PHP tutorial
Introduction: "Login with user password in phpMyAdmin" added. Important note: Please modify the IIS5 + PHP + MYSQl and PWS + PHP + MYSQL environments. During debugging, my machine has a tmp directory on the disk where php is running, so no accidents occurred. Some netizens wrote to say
9. php environment setup (using the integrated environment phpnow)_PHP tutorial
# #Introduction: PHP environment construction (using the integrated environment phpnow). Setting up a PHP environment is actually not difficult, but the process is a bit cumbersome. It would be time-consuming and laborious to build a PHP + MySQL environment using original programs. And when configuring PHP, something like this often occurs
10. Win8.1 builds an Apache + PHP + MySQL environment. Only localhost can be accessed!
Introduction: Win8.1 builds Apache + PHP + MySQL environment. Only localhost can be accessed!
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DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
