rollback transaction

Main Category table name: Navtion_topsubject primary Key Ftopid Char (36) Sub-category Table name: Navtion_nodesubject FOREIGN Key ditto Content Table name: Ttext FOREIGN Key ditto Copy Code code as follows: Start-------------Code-------

Problem: Customers need to call our workflow interfaces during their database operations, so that we need to put our workflow operations in the same transaction as their business operations. Our services are in the spring declarative transaction,

Understanding Transactions and LocksTransactions: The essential tool for maintaining logical data consistency and recoverability.Lock: When multiple users access the same database resource, a mechanism for the priority authority management of access,

SQL transaction One, the transaction concept transaction is a mechanism, is a sequence of operations, it contains a set of database operations commands, the set of commands are either all executed, or all do not execute. Therefore, a transaction is

The previous article on how to build the MyBatis development environment, this article mainly supplemented by the relevant code optimization.Previous: mybatis-build MyBatis development Environment One (MyEclipse version) 1. Simplify classpath

Let's take a look at a short procedure.The following three tables are available:Account (number, name, balance, establishment date, savings Bank number)Savings Bank (number, name, address, number of persons, city)Borrowing (account, type of loan,

Javaweb Learning Summary (38)--transaction one, the concept of business　　a transaction is a logical set of actions that make up the units of this set of operations, either all succeed or all are unsuccessful.For example: a--b transfer, corresponding

Use python to operate mysql Databases and pythonmysql Databases I. Basic Database Operations 1. To allow Chinese writing in the database, run the following command when creating the database: create database zcl charset utf8; 2. view the students

1. What is implicit transaction? This is actually a concept that is not easy to understand. Let's take a look at what the document says. When a connection is operated in a recessive transaction mode, the SQLServer Database Engine instance

1. A trigger is a special stored procedure. It cannot be explicitly called. Instead, it is automatically activated when a record is inserted, updated, or deleted into the table. Therefore, triggers can be used to implement complex integrity

This article provides an excellent mechanism to define, encapsulate, and manage transactions. For more information, see This article provides an excellent mechanism to define, encapsulate, and manage transactions. For more information, see ACID:

A trigger is a special stored procedure. It cannot be explicitly called. Instead, it is automatically activated when a record is inserted, updated, or deleted into a table. Therefore, triggers can be used to implement complex integrity constraints

1 , overviewSQLite3 is an open-source, embedded relational database with good portability, ease of use, and low memory overhead.SQLite3 is untyped, meaning that you can save any type of data to any field in any table. For example, the following

ORA-01409: nosort option may not be used; rows are not in ascending order Cause: Creation of index Nosort option when rows were not ascending. For non-unique indexes Rowid is considered part of the index key. Therefore, if you create

　1. A trigger is a special stored procedure. It cannot be explicitly called. Instead, it is automatically activated when a record is inserted, updated, or deleted into the table.Therefore, triggers can be used to implement complex integrity

 1. A trigger is a special stored procedure. It cannot be explicitly called. Instead, it is automatically activated when a record is inserted, updated, or deleted into the table. Therefore, triggers can be used to implement complex integrity

1.1.1 Summary I believe you are not familiar with SQL Transcation. It ensures data consistency and security of the database. Especially when adding or deleting data, if exceptions or errors occur, it triggers transaction rollback, this ensures data

I. Overview... 1 Ii. Adverse Effects of concurrent access... 1 1. dirty read (dirty read)... 1 2. nonrepeatable read... 1 3. phantom read... 1 Iii. concurrent access control mechanism... 2 1. Lock... 2 2. Row version control... 2 Iv. isolation level.

Transaction control is often used in distributed applications. A transaction has a beginning and a end, which specifies the transaction boundary. A transaction can span across processes and computers within its boundary. All resources within the

Original article: http://blogs.msdn.com/ B /apgcdsd/archive/2011/12/30/10251946.aspx Intercept a paragraph for future referenceHow does the log file affect the startup of my database? Whether your SQL Server is started, you can recover a