mercurial version control

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MySQL multi-version concurrency control

MVCCBy adding two hidden columns to each table, one saves the creation time of the row, a time to save the row's expiration (or delete time), and the time corresponding to the versionCreates a new transaction that creates a new version numberPre-conditionsA. InnoDB only data rows with versions older than the current transaction version are foundB. The deleted version

How to Use git Version Control in QT Creator in Windows XP

How to Use git Version Control in QT Creator in Windows XP Qt creator is an IDE development tool specially designed for the QT application development platform. It integrates many functions, including windows, Linux, and Mac versions. For developers who frequently use QT, we will not discuss it much. The following describes how to use Version

Most complete Pycharm tutorial (--pycharm) Local git usage for version control

1. ThemeDescribes if you use a local git set through Pycharm.2. Preparatory work(1) Pycharm version 2.7 or higher(2) A project has been created(3) Git plugin is available, corresponding executable file is configured correctly on Git page page3. Create a Git setPress ALT + ' show commonly used VCS commands (also available via the main menu Vcs→vcs Operations Popup), select the Create Git repository command:Git installs the local repository by creating

Git version Control Library extensions

Sun Guangdong 2015.6.14Before the unity5.x version, we opened with a text editor such as sublime text. Unity. Prefab is a text content that can be seen in YAML format, but in unity5.x when looking at. Unity. Prefab file has become a binary file TheLet's take a look at the internal tools that unityprovides us with: Smart mergeUnity uses something called Unityyamlmerge , a tool that combines scenes and prefabricated files in a semantically correct way.

Configuration and use of CVS version control software

Configuration and use of CVS version control software Author of http://www.chinaunix.net: released after zdm Modification Configuration and use of CVS version control software (1) software installation:1. software acquisition: CVS is a typical server/client software, including cvs for UNIX, cvs for Linux, and cvs for W

Linux--gitlab version control, about project group management, project user and Rights management use

Tags: enable question Google translate the main wget password entry for the self-starter fileGitlab is generally used for:1. Management of various document changes in the development projectThe main function is to track changes to the file and record the information. Each time the file changes, the version number will increase 2. Parallel developmentSoftware development often is multi-person collaboration, and ver

Version control of Agile Development

What kind of Project version control tool are you using? Now the more popular version control has parallel (SVN), distributed (Git), streaming project versioning.what principles or specifications do you generally need to know about using version

Version control of an assembly [next]

Program | Control here on the specific implementation of the assembly version of the control simply say two ways. Hope to have a certain reference meaning it. 1. Manual Encoding Implementation: Adding a static, read-only String Type property in a class codeversion represents the version number of the assembly (that is,

MYSQL_ Multi-version concurrency control, storage engine, Index introduction

Multi-version concurrency control Most of MySQL's transactional storage engines do not implement simple row-level locks. Based on the consideration of improving concurrency performance, they generally implement multi-version concurrency control at the same time. MVCC can be thought of as a variant of row-level locking,

How does PHP version control work?

How does PHP version control work? How does PHP version control work? Reply content: How does PHP version control work? Is this tool for managing multiple php versions: https://github.com/wilmoore/php-

Four isolation levels for SQL transactions and MySQL multi-version concurrency control

results.RepeatableRead (can be reread)This is the default transaction isolation level for MySQL, which ensures that multiple instances of the same transaction will see the same rows of data while concurrently reading the data. In theory, however, this can lead to another tricky problem: Phantom Reading (Phantom read). Simply put, the Phantom read worth when a user reads a range of data rows, another transaction inserts a new row within that range, and when the user reads the data row for that r

Common terminology for version control software (CVS,SVN)

Sandbox: Sand Box The difference between CCVS and most other version control systems is that it allows developers to edit the same file at the same time, first you should start from the warehouse Take out a copy of the source code to your local computer, this local copy is called the sandbox Make new module: Create a fresh warehouse or module Create a new warehouse or module on the server. Checkout: R

C#winform version of CheckBox, Checklistbox control Traversal code

CheckBox, which is a common control in various development locales and Web pages.Below, this article is to explain the c#winform version of the checkbox, control traversal, select all, anti-select instance code.① Direct ReferenceIf a CheckBox control is present in a form, the method of direct reference is:The

High-performance MySQL learning notes-Multi-version Concurrency Control Algorithm

Autocommit MySQL is automatically submitted by default. You can view and modify it using the following command: Mysql> show variables like 'autocommit ';+ --------------- + ------- +| Variable_name | value |+ --------------- + ------- +| Autocommit | on |+ --------------- + ------- +1 row in SET (0.00 Sec)Mysql> set autocommit = 1; Implicit lock explicit lock When InnoDB starts a transaction, it obtains the implicit lock and releases the lock when the transaction is committed or rolled back.

RGB LED color control with Raspberry Pi--python version

please refer to the other blog post for the circuit connection method: "Color control for RGB LEDs with Raspberry Pi--c language version"Python code:#!/usr/bin/env python#********************************************************* #File Name:rgb.py#author:jason Dai #Date: 2015/02/04#*********************************************************import Rpi.gpio as GPIOimport timecolors = [0xFF0000, 0x00FF00, 0x0000

git+python+ Management machine for configuration file version control

With the company's business more and more, the grouping of business is more and more, like Nginx,haproxy,lvs and so will also distinguish the multi-group configuration, so I want to write a simple set of support for multi-person operation/version control/Fast rollback of a set of management solutions.A brief description of my design ideasThrough a single springboard to git pull the Nginx configuration file

Version Control in MicroStrategy

MicroStrategy doesn ' t support Versioning. BTW, There are two types of versioning in MicroStrategy. Source control (what I ' m taking about over here) and slowly changing Dimension (SCD). Lots of clients have put requests to microstrategy to have this feature the version control for schema object or at least a Ttributes. In short the answer for this question are

Fireworks MX 2004 version control and file upload

: In addition, FW can only recognize remote sites defined by FTP or local/network transfer mode, and other transport-defined sites cannot use the FW file management feature. So we can only choose the FTP or Local/network way to define, we use the FTP method here to define. The method is simple, just define the FTP address of the remote site, username and login password, as shown below: Second, the Enable file check in and check out option must be checked to use

One hour proficient in SVN version control four myeclipse using SVN

Tags: svn Java code Management version Control co-developmentSteps to use the SVN plugin in myeclipase: Find MyEclipse10 in the installation directory, under the Dropins folders, such as: D:\MyEclipse\MyEclipse 10\dropins ; in Dropins svn folder; decompression SVN plugin will features file and plugins file copy to svn folder, restart myeclipse can appear svn ! 4

How to configure version control for sublimetext3

How does sublimetext3 configure version control for some cool php players, as if they all use sublime text. In particular, version control is a sign of the different levels of these people. I read a mysterious hacker and told me that this software is good. he has version

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