Mysql trainees: six novice road projects

Connect Mysql d: cd D:\mysql-5.7.27-winx64\mysql-5.7.27-winx64\bin net start mysql mysql -u root -p Item 10: Employees with the highest salaries in all departments Create an Employee table that contains all employee information, each employee has ...

Posted on Tue, 13 Aug 2019 05:24:07 -0700 by yaba

4412 u-boot detailed start-up process

u-boot boot 1. start.S 1.1 u-boot entry function_start Set the exception vector table and jump to the reset function 58 _start: b reset 59 ldr pc, _undefined_instruction 60 ldr pc, _software_interrupt 61 ldr pc, _prefetch_abort 62 ldr pc, ...

Posted on Wed, 31 Jul 2019 02:33:48 -0700 by Iokina

C++ Chain of Resposibility

brief introduction Responsibility chain model is an object's behavior model. In the responsibility chain model, many objects are linked by each object's reference to its subordinates to form a chain. The request is passed on the chain until an object in the chain decides to process the request. The cl ...

Posted on Tue, 30 Jul 2019 16:36:20 -0700 by Delaran

Shopping cart number adder and subtractor

The Beginning View of Custom Controls I am a bitter b programmer, working overtime tonight to nearly all night, sleepy to open my eyes, the female boss is very concerned, asked me if I want to eat midnight. I am not angry to say, even if the night, let me sleep on it. The female supervisor blushed and said something disgusting. Then she sat b ...

Posted on Fri, 05 Jul 2019 15:51:24 -0700 by sametch

Deeply Understanding the Startup Process of Android-Activity

I. Preparations 1. Get ready to read the source code tools. 2. Introduction to the Functions of Main Classes Activity Manager Services, referred to as AMS, is the core service of Android. It is mainly responsible for the starting, switching and scheduling of the four components in the system and the management and scheduling ...

Posted on Thu, 20 Jun 2019 12:52:00 -0700 by ChetUbetcha

Node.js Express Framework

1. Introducing Express and creating Express framework instances const express = require('express'); const app = express(); app.get('/',function(req, res) { res.send('Hello index'); }) const server = app.listen(8081,'127.0.0.1', function () { const host = server.address().address const port = server.address().port consol ...

Posted on Wed, 12 Jun 2019 12:18:33 -0700 by Win32

centos 7 uses supervisor to manage laravel queues

supervisor A client/server service developed by python is a process management tool under linux/unix system. It can easily monitor, stop, and restart one or more processes. The process managed by supervisor is killed unexpectedly. When supervisor hears the process dead, it will automatically pull it up again. It is very convenient to achieve th ...

Posted on Thu, 06 Jun 2019 15:07:48 -0700 by Gmunky

Short Practice - Database Basis (I)

** 1. Syntax for creating tables: ** CREATE TABLE STUDENT( SID NUMBER NOT NULL PRIMARY KEY, STUNAME VARCHAR(30) NOT NULL, STUAGE NUMBER , ADDRESS VARCHAR(100), TEL NUMBER ); 2. Insert information INSERT INTO STUDENT(SID,STUNAME,STUAGE,ADDRESS,TEL)VALUES(1,'Zhang San',20,'Tianjin Airport',17602684398) 3. Insert sp ...

Posted on Sun, 26 May 2019 14:14:35 -0700 by nagrgk

linux Process Management Tool supervisor

purpose There is a process that needs to be run all the time, but it may be interrupted for various reasons. When the process is interrupted, you want to restart it automatically. At this point, I need to use Supervisor. Preface The supervisor-managed process must be initiated by the supervisor The supervisor also requires that the manag ...

Posted on Thu, 11 Apr 2019 22:12:31 -0700 by yankeefan238

Flume Monitoring

Flume, as a log collection tool, shows a very powerful ability in data collection. Its three components, SOURCE, SINK and CHANNEL, are used to complete the process of receiving, caching and sending data, which has a perfect fit. But here, we are not talking about how good Flume is or what advantages Flume has. We are talking ab ...

Posted on Sat, 02 Feb 2019 16:33:16 -0800 by nobru