database functionality such as transaction support, foreign keys, and so on.Binary data files of type MyISAM can be migrated in different operating systems. That is, it can be copied directly from the Windows system to a Linux system.To modify the engine type of a table:AlterTABLE tablename ENGINE = MyISAM;MyISAM:, which is based on the traditional ISAM type, ISAM is indexedSequential access method (indexe
Tags: innodb myisam auto_increment Index1. The Auto_increment field of the InnoDB engine must be an index. If it is a composite index, it must be the first column of the combined index.CREATE TABLE Autoincrement_demo_inno (
id1 int not null auto_increment,
ID2 int. NOT NULL,
name Varc Har (Ten),
index (ID1, ID2)
) Engine=innodbThis must be index (ID1, ID2) and an error will occur if the ID1 is not placed in
Some time ago watching the Smarty template engine tutorial of the Hanshunping blog, and then combining myself with the TPL template engine written by Li Tinghui in the second quarter of the development CMS system. Today to write a mini version of the Smarty engine, although I did not delve into the source of smarty, but the principle of the template
Create a project in the Egret engine development guide and an egret engine guide project
Egret provides a very convenient creation tool. We call the total number of created files as a project. Follow these steps to create a project:
Note that Egret supports Windows and Mac OS X. The Egret command is the same on different platforms. For different commands, refer to the related platform operations in the docu
Use the RuPengGame engine package to create a game form such as Peng game engine package Thread Runnable ticket selling instance and rupenggamerunnable
Package com. swift; import com. rupeng. game. GameCore; // import the game engine package// Implement the Runnable interface public class Game_RuPeng implements Runnable {public static void main (String [] args)
Today, the search engine is over and opening up the future. To clarify the third law, let's first review the first and second law.■ Law 1 correlation lawIt sounds like an academic paper. Even the first and second laws have never been mentioned before, but first, the content of the second law has already been recognized by the industry and academia. In fact, this first law has been widely studied by academia before the emergence of the Internet, th
Basic concepts of cocos2d-x-3.6 engine, cocos2d-x-3.6 Engine
First, let's talk about several important basic concepts in the engine: Directors, nodes, scenarios, layers, and genie. Of course, developers will encounter many other concepts, but it doesn't matter. With these basic concepts, it will be much easier to learn later.
Node is the most basic class in th
No. 362, Python distributed crawler build search engine Scrapy explaining-elasticsearch (search engine) basic index and document CRUD operationsElasticsearch (search engine) basic index and document CRUD operationsthat is, basic indexing and documentation, adding, deleting, changing, checking , manipulatingNote: The following operations are all operating in the
No. 371, Python distributed crawler build search engine Scrapy explaining-elasticsearch (search engine) with Django implementation of my search and popularThe simple implementation principle of my search elementsWe can use JS to achieve, first use JS to get the input of the search termSet an array to store search terms,Determine if the search term exists in the array if the original word is deleted, re-plac
Logical processing functionsCalculate Search Time-consumingBefore starting the search: Start_time = DateTime.Now () Gets the current timeAt the end of the search: End_time = DateTime.Now () Gets the current timeLast_time = (end_time-start_time). Total_seconds () end time minus start time equals times, converted to secondsFrom django.shortcuts import render# Create your views here.from django.shortcuts import Render,httpresponsefrom django.v Iews.generic.base Import viewfrom app1.models import la
In traditional information retrieval, the basic index of the system: Recall (Recall) and precision ratio (pricision), recall is the number of related documents retrieved and the ratio of all relevant documents in the document library; The precision ratio is the percentage of the number of related documents retrieved and the total number of documents retrieved. For a retrieval system, recall rate and accuracy can not be the same: high recall rate, low precision, high precision, low recall.
For
First of all, before writing this article, first share a word with you:
"What you can do now, do it seriously, don't worry about the future."
Ha, this sentence, actually really want to tell oneself just, write on the blog Phper, that time is really thought will always write PHP, unexpectedly, today changed to ASP.net.
OK, other don't say, perhaps later also have phper to asp.net or asp.net go to PHP also not necessarily ha. So, write down this article today, so that I am familiar with the sma
When configuring InnoDB parameters today, modify the default configuration. As a result, the started server does not support the InnoDB engine. Plugin 'innodb' registry as a storage engine failed.
Error Log:
InnoDB: Data File/usr/local/mysql4/data/ibdata2 did not exist: new to be created
100702 14:34:53 InnoDB: setting file/usr/local/mysql4/data/ibdata2 size to 20 mb
InnoDB: Database physically writes the f
NodeJS creates the basic application and application template engine, and nodejs creates the template engine.
The purpose of this project is to build a NodeJS server with the most basic functions that can be implemented, reflecting the node. js workflow and the basic framework for development.Requirement: nodejs and express have been installed.1. Build a basic NodeJS server (express and route)
Var express =
Through the last piece has been able to replace the placeholder with the value of the corresponding variable, the implementation of a simple mini template engine, template engine a good function is to be able to calculate some simple expression, the core of the computation expression is actually the execution string, the method of executing the string is various eval,function, SetTimeout and so on, can be e
With the "eye-catching economy" sweeping across the Internet, thousands of dollars are rapidly flowing to the most eye-catching search engine market. A large number of surveys show that the search engine market is in a period of rapid development and has become one of the most promising industries in the next few years. As Google, Baidu, Chinese search and other distinctive search engines graduall
[Play with writing] Search Engine writing records (1), search engine writing
My recent work is not very busy. If I have nothing to do in my spare time, I will sort out the knowledge in my notes and find that I have learned a lot about crawlers and indexes in the past, why don't I write a search engine?
Just do what you want. These essays record the ideas and pr
Cocos2d_x_02 _ use the built-in physical engine and cocos2d_x_02 EngineFinally:1. Create a project to enter the bin directory under the cocos2d-x tools:/Users/beyond/Desktop/cocos2d-x/cocos2d-x-3.3beta0/tools/cocos2d-console/bin directoryOpen the terminal and switch to the bin directoryUse the cocos command to create a project in the following format:
Cocos new project name-p package name-l language-d target folder,
For example:
Cocos new 01_cocos
Example introduction Cocos2d-x physical engine: Using joints, cocos2d-x Engine
In the game, we can constrain the motion of two objects by joint. We use a distance joint instance to describe how to use the joint.
In the running scenario of this instance, when the scenario is started, the player can touch and click the screen. Each time a touch is made, two new genie will be generated at the touch point and n
Tags: MyISAM logs art text tab detail efficiency net SamTransfer from http://blog.csdn.net/lingyi_xu/article/details/5393791 The difference between the InnoDB engine and the Mysiam engine
Engine
Transaction
FOREIGN key
Recommended actions
INNODB
Support
Support
Add, modify
MYISAM
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