postgresql begin transaction

The target of PostgreSQL is very similar to that of the current MySQL database. So what are the advantages of PostgreSQL? This article will be explained to you. This article introduces the basic concepts of PostgreSQL's transaction processing

Tag: Select the complete sequence process date ready version to generate the calculationPostgreSQL transaction processing and concurrency control:A transaction is the basic unit of work in PostgreSQL and is a user-defined sequence of database

PostgreSQL provides developers with a rich set of tools to manage concurrent access to data. Internally, data consistency is maintained by using a multi-version model (multi-version concurrency control, MVCC). This means that each SQL statement sees

PostgreSQL has its own transaction implementation model. Generally, there are three layers: toplayer, middlelayer, and bottomlayer. PostgreSQL has its own transaction implementation model. There are three layers: top layer, middle layer, and bottom

PostgreSQL transaction model Introduction PostgreSQL has its own transaction implementation model. There are three layers: top layer, middle layer, and bottom layer. 1. Top Layer The Top Layer is mainly controlled by users and visible to users. This

Distributed transactions, like local transactions, contain atomicity (atomicity), consistency (consistency), isolation (isolation), and persistence (durability). Two-stage commit is an important method to ensure atomicity in distributed transaction.

MySQL vs. PostgreSQL MysqlRelatively young, appearing for the first 1994 years. It claims to be the most popular open source database. MySQL is the M in the lamp (for web development packages, including Linux, Apache, and Perl/php/python). Most

2.3 Understanding consistency and data lossIt is not possible to mine PostgreSQL transaction logs without regard to consistency. In the first part of this chapter, we have largely explained the basic idea of the transaction log. You already know

Originally wanted to find the PostgreSQL database occupy Space Command found this blog, found that the provision of severalcommand is useful (but there are several senses that are sucks.) =), so he translated it over. In addition this article is 09,

Objective: We all know the nature of transactions, the database in order to maintain these properties, especially consistency and isolation, the general use of lock this way. At the same time, the database is a high concurrency application,