commit and rollback

Use, examples, and considerations for C # transactions (turn) I. Introduction to the Business. NET Framework Developer's GuideA transaction is an operation that sets up a group of logical units of work, although errors may occur in the system, but

The Java Database connection (JDBC) consists of a set of classes and interfaces written in the Java programming language. JDBC provides tools/database developers with a standard API that enables them to write database applications with a pure Java

Oracle database-Management section for data processing and tablesTypes of *sql DML(Data manipulation Language-action language): Select/insert/update/delete DDL(data definition Language): Create Table/alter table/truncate table/drop

The relevant knowledge points of this content we introduced some of them when we studied sqlserver2008r2, including: Transactions, indexes, views, etc. So today we are learning to implement these important things on Oracle for database

1.Posgresql is a process mode, multi-process, single-threaded, and similar to Oracle. While MySQL uses threading mode, single-process, multi-threaded, for this, you can view the Task Manager when running the database, and so is SQL Server.As we all

 Oracle_ Data Processing① Data Manipulation languageDML (data manipulation language–) can run under the following conditions:Inserting data into a tableChange existing dataDelete existing dataQuerying existing dataA transaction is made up of DML

Version 1.MySQLMysql> Selectversion ();+------------+|Version ()|+------------+| 5.5.Panax Notoginseng-Log |+------------+1Rowinch Set(0.00Sec2. Create a test tableMysql> Create TableTest_trans (IDint, name_varchar(Ten)); Query OK,0Rows Affected (0.2

 Oracle_ Data Processing① Data Manipulation languageDML (data manipulation language–) can be executed under the following conditions:Inserting data into a tableModifying existing dataDelete existing dataQuerying existing dataA transaction is made

First, Introduction:The previous one mentions the concepts associated with JDBC transactions. It is understood that transactions should have acid characteristics. So for javaweb development, the method of a service layer should be a transaction and

Auth:jindate:20140507First, transaction controlBy default, MySQL is autocommit (autocommit), and if you need to commit and rollback a transaction through explicit commit and rollblack, you need to start the transaction with explicit transaction

(0) How to useYou can use the system-provided method: $this->db->trans_start (); Start transaction $this->db->query (); Executive Sqls$this->db->trans_complete (); End transaction (no need to worry about rolling back) if! $this->db->trans_status do

JDBC (Java database Connection) is the database connectivity standard provided by Java, and the specific standard implementation is provided by each database vendor. The following is an example of MySQL for a simple demonstration of the basic usage

Recent projects have used distributed transactions, this article and the next two articles summarize the knowledge learned in the project.Distributed transactions have a certain impact on performance, so it is not the best solution to avoid the best

Introduction: In the previous article we examined how to let the TableAdapters Wizard automatically create stored procedures. In this article, we'll look at how to get TableAdapter to use existing stored procedures. Because the Northwind database

Change and deletion in 1.Oracle DML (Data manipulation language– ) can be performed under the following conditions: Inserting data into a table, modifying existing data, and deleting existing data. A transaction consists of a DML statement that

Introduction: As we discussed in the 16th chapter, "Overview inserts, updates, and deletes data," the features built in the GridView control support editing and deletion of data for each row, You just have to move your mouse a little bit to create

A database is a shared resource that can be used by multiple users. These user programs can be executed serially, one by one,Only one user program runs at a time,Perform access to the database,Other user programs must wait until this user

One, 7 types of temporary documentsA different feature of SQLite is that a database is composed of a single disk file. This simplifies the use of SQLite because moving or backing up a database simply copies a single file. This also makes SQLite

Chapter Eighth Data processing1. Data Manipulation languageDML (data manipulation language–) can be executed under the following conditions:Inserting data into a tableModifying existing dataDelete existing dataA transaction is made up of DML

JDBC programming-transaction programming (4)Transaction Concept In my opinion, the concept of a transaction refers to a set of SQL sequences. This sequence is a unit of execution, either all or all, in this way, you can control the concurrency of