rollback

Oracle is a relational database management system, which has powerful function and excellent performance, and occupies an important position in today's large database management system. Under normal circumstances, Oracle database will ensure data

Another tstoredproc part that uses stored procedures in the Csdemo application is Deleteemployeeproc. It accomplishes the task of deleting records from the employee table and modifying all related tables to maintain data consistency. The properties

Article Summary: Oracle is a database platform, and some projects use Oracle's database replication technology, which also encounters some problems, so here I have a personal understanding of Oracle's replication technology, hoping to help the

Data | database What is a database transaction A database transaction is a series of actions performed as a single logical unit of work. The payment process includes at least the following database operations, assuming a single transaction for

ado|server| Control 1 Concurrency consistency issues Common concurrency problems include: lost modifications, non-repetitive reading, dirty data reading, Phantom Reading (phantom reading is often classified as a type of non repeatable reading in

1. Use multiple rollback segments Use multiple rollback segments to share contention for rollback segments to improve system performance. The system uses loops to allocate the rollback segment. When Oracle creates a database, the system

InnoDB, like most line databases, records stored in row format, which provides two formats: compact and redundant Compact The compact format is introduced in MySQL5.0, a new line format designed to efficiently store data, as shown in the following

oracle| Control | data | Detailed transaction control transaction control includes coordinated access to multiple synchronizations of the same data.　　When a user changes the data that another user is using, Oracle uses transaction control who can

MySQL's business operation Long to write, has been forgotten, in fact, very simple On three orders. Start transaction Commit Rollback Now to explain: Start transaction; is the command to start a transaction trail. You must remember to write

Inherit the last article, "Eclipse Quick-start hibernate--4." Inheritance mapping (1) has discussed the strategy for each Class hierarchy table (table per class hierarchy), which is mainly about the strategy for each subclass table (table per

Case study (1) Let's say I modified a piece of data: Update people set name= ' Fusnow ' where name= ' old Fusnow '; The things I need to do include: Generate redo information in redo log buffer (including Redo,undo redo of the table, index or

Reference Manual | Chinese InnoDB chinese reference Manual---Dog dog (heart sail) Translation 8 InnoDB transaction Mode and lock In InnoDB transaction mode, the goal has been to combine the best properties of a multiversioning database to

Many database operations on the web require transactions, and there are roughly 3 levels of transactions under ASP.net: (1) Transaction at the level of the stored procedure (2) Ado.net-level transactions (3) asp.net transaction at the page

I. SummaryTwo days ago on the blog published an English Automatic Update component article release a Autoupdater tool, then in this article, we also have some simple explanation of its function, this component is very simple, so you can download

PowerBuilder (PB) is a powerful development tool based on client/server architecture launched by PowerSoft Company (has been acquired by Sybase) and has been well received by developers since its inception. DataWindow is a patented technology in PB

Server Rich data types Richer-Types 1, varchar (max), nvarchar (max), and varbinary (max) data types can hold up to 2GB of data and can replace text, ntext, or image data types.CREATE TABLE myTable(ID INT,Content VARCHAR (MAX)) 2. XML data typeXML

It has been more than a month since the last version of the Drive Wizard was released, and during this time we have been trying to collect some details that have been revised and improved in this SP3 version of the Drive Wizard. We have addressed

The following are the referenced contents:void Restorebutton_click (object sender, System.EventArgs e){string path = Pathtextbox.text;String dbname = Dbdropdownlist.selectedvalue;String restoresql = "Use master;";Restoresql + + "RESTORE Database

Hello everyone, remember last time I brought you together to achieve a similar with Taobao client with a picture scrolling player effect, but after finishing, I found that I forgot to add the function of the picture auto play (perhaps I

Notes | transaction processing Understanding SQL Incident Handling1 The work done by the statement during SQL transaction can be canceled (using the rollback statement) before it is permanently written to the database. Commit tells the DBMS to make