postgres transaction

ACID, refers to the four characteristics of a transaction in a database management system (DBMS): atomicity (atomicity), consistency (consistency), isolation (isolation, also known as independence), persistence (durability). In a database system, a transaction refers to a complete logical process consisting of a series of database operations. For example, bank transfer, deduction of the amount from the orig

Spring transaction management and Spring transaction managementI. Transaction overview transaction management is an essential technology for enterprise-level application development. It is used to ensure data integrity and consistency.A transaction is a series of actions, wh

Transaction Processing and concurrency control, transaction processing Concurrency Control What is a transaction? Is a mechanism, an operation sequence, it contains a group of database operation commands, and all the commands as a whole, together to submit or cancel the operation request to the system. It consists of one or more SQL statements that complete a rel

Tags: ISO remove 16px star Guide disk failure in version control filetransactions (SQL Server) First, the concept of businessA transaction is a mechanism, a sequence of operations, that contains a set of database operations commands that either execute all or do not. Therefore, a transaction is an inseparable unit of work logic. The transaction is used as the sma

Label:MySQL transaction processing simply describes the transaction:MySQL transaction is mainly used to deal with large-scale and high-complexity data.For example, in the Personnel Management system, you delete a person, you need to delete the basic information of the person, but also to delete the information related to the person, such as mailbox, articles and so on, so that these database operation state

Spring transaction management and Spring transaction management Transaction introduction:Transaction Management is an essential technology in enterprise application development. It is used to ensure data integrity and consistency.Transactions are a series of actions, which are considered as a separate unit of work. Either all these actions are completed or all of

Spring provides flexible and convenient transaction management capabilities, but these functions are based on the transaction mechanism of the underlying database itself. To gain insight into the transaction management and configuration of spring, it is necessary to learn the basics of database transactions first.What is a database

Mysql transaction processing detailed explanation and complete instance download, mysql transaction processing instance I. Mysql transaction concepts MySQL transactions are mainly used to process data with large operations and high complexity. A logical execution unit consists of database operation sequences of one or more steps. These operations are either execu

Mysql transaction processing details, mysql Transaction Processing I. Mysql transaction concepts MySQL transactions are mainly used to process data with large operations and high complexity. A logical execution unit consists of database operation sequences of one or more steps. These operations are either executed in full or abandoned. In MySQL, transactions are

Oracle Transaction Processing Mechanism explanation, oracle Transaction Processing Mechanism I. Transaction Concept Concept: transactions in databases are logical units of work. A transaction is composed of one or more SQL statements that complete a group of related behaviors, the

Spring entry (3) [transaction control], spring entry transaction control The database needs to be operated during development, and the process of adding, deleting, and modifying operations is one operation. If you need to update multiple tables in a business, the update of any table fails, update of the entire business is a failure. In this case, tables that have been successfully updated must be rolled bac

1 Series Catalogue The Distributed Transaction series (opening) raises questions and research processes Distributed Transaction Series (1.1) Spring transaction manager Platformtransactionmanager Source analysis 2 JDBC Transaction2.1 Examplespublic void save(User user) throws SQLException{ Connection conn=jdbcDao.getConnection(); conn.setA

1. What is a transaction:A transaction is a rigorous set of operations in a program, and all operations must be completed successfully, or changes made in each operation will be undone, which is the atomicity of the transaction (either success or failure).2. Transaction characteristics:Transaction characteristics are divided into four: atomicity (atomicity), cons

Label:Turn from: http://www.cnblogs.com/zemliu/archive/2012/06/17/2552301.html There are four levels of database isolation, as described in the "high Performance MySQL" book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-committed, Repeatable-read, serializable.2 [mysqld]3 transaction-

There are four database isolation levels, as described in the "high-performance MySQL" Book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-committed, Repeatable-read, serializable.2 [mysqld]3 transaction-isolation = Repeatable-readHere the global default is Repeatable-read, in fact, My