[translation] 2017 years of the best database certification

Article translated from: http://www.tomsitpro.com/articles/database-certifications,2-664.htmlWe always demand knowledgeable, talented, knowledgeable database professionals. Here are some of the best database certification, to dba,database developers

Sqlsever base ASCII function returns the ASCII value of a character

Town Field Poem:——— Dream who feel, the water month Build blog. Baiqian tribulation, only know the vicissitudes of the world.——— today holds the Buddhist language, the technology is boundless willing to learn. Willing to do what you learn, cast a

The difference between char nchar varchar nvarchar text ntext in SQL

Type Length Instructions for use Length description CHAR (n) Fixed length High index efficiency, using trim inside the program to remove extraneous blanks n must be a numeric value between 1 and 8000, with

Hadoop installation times Wrong/usr/local/hadoop-2.6.0-stable/hadoop-2.6.0-src/hadoop-hdfs-project/hadoop-hdfs/target/ Findbugsxml.xml does not exist

Install times wrong: Failed to execute goal org.apache.maven.plugins:maven-antrun-plugin:1.7:run (site) on project Hadoop-hdfs:an Ant B Uildexception has occured:input file/usr/local/hadoop-2.6.0-stable/hadoop-2.6.0-src/hadoop-hdfs-project/

SQL table join query (inner JOIN, full join, left JOIN, right join)

Prerequisites: Suppose there are two tables, one is the student table and the other is the Student score table.The table data are:One, internal connection-inner jion:The most common connection query may be that of identifying the student's name and

"ubuntu" installing Ubuntu Server over a wireless network, how to connect to a wireless network after booting the system

Contact with Ubuntu system soon, found in the wireless network environment to install Ubuntu Server A less humane design: During the installation process to select a wireless network card, that is, the use of wireless networking installation (you

Micro-service Combat (ii): using the API Gateway

"Editor's note" The first article in this series describes the MicroServices architecture model. It discusses the advantages and disadvantages of using microservices, which are the ideal choice for complex applications, in addition to some complex

WIN32 Programming API Basics--1. Getting Started Guide translation according to English course

Getting Started GuideWhat's this tutorial about? Win32 Api The basics of writing programs (and general notation). The language used is c But most c++ api java , assembly and visual Basic api based on the use of other languages for

The difference between define and const

A constant is an identifier (first name) of a simple value. As the name implies, the value cannot be changed during script execution (except for the so-called magic constants, they are not constants). Changshime is considered to be case sensitive.

Chrome plugin: Starting a local app (Native messaging)

Chrome plugin: Start local app (Native messaging) www.MyException.Cn share in: 2014-08-01 views: 3 timesChrome Plugin: Launch local app (Native messaging)Recently encountered a new problem, need to use chrome plug-ins, from one of our web site to

"Reprint, organize" domain name CNAME resolution configuration, use domain B as the CNAME record value for domain A

Recently there is a demand, not the record of the domain name A, want to resolve to Hong Kong or domestic servers, but because of the non-filing, direct use of CDN analysis in the domestic visit will be very slowBut do not want direct directly to

The structure and working principle of hard disk----reproduced

Reprinted from: http://blog.csdn.net/tianxueer/article/details/2689117General hard disk front affixed with product labels, mainly including manufacturers information and product information, such as trademarks, models, serial numbers, production

Ssh-keygen detailed

First, a Google Wiki for the interpretation of SSH key, the corresponding connection is: Https://wiki.archlinux.org/index.php/SSH_keys_ (%e7%ae%80%e4%bd%93%e4%b8%ad%e6 %96%87), here say a digression, Google is really better than hundred *

Hierarchical data model, mesh data model and relational data model of logical data model

The previous article briefly introduced the conceptual data model, the logical data model, the physical data Model basic concept, the characteristic as well as the three corresponding database development stage. Now for the three kinds of data

15 Chrome plugin Lets designers say goodbye to procrastination

Cool down and share a big wave of chrome extensions that effectively help designers improve productivity! Efficiency is another benevolentIn the work, or in life, some words we say are full of positive energy, and others are very depressed, the

Codeforces 604C Alternative Thinking

Title Link: Http://codeforces.com/problemset/problem/604/CTest instructions: Give a 01 string, you can specify the starting point, end point, flip this interval once. After the rollover is required, the 0,1 alternately appears with the longest

Cacti 0.8.8h One-click installation package

Cacti 0.8.8h One-click installation scriptThis script integrates all the latest cacti versions and the latest common pluginsIncludes latest plugins such as thold settings syslog clog MonitorRRDtool supports Chinese fonts and Chinese titlesDefault

NPM install failed with "cannot run in WD"

In the Linux environment, the root account, when installing certain NPM packages, reported the following errors, such as when installing grunt-contrib-imagemin :Error:eacces,mkdir '/usr/local/lib/node_modules/coffee-script'NPM ERR!

SCP Command and SFTP command

SCPHelp command: Man SCP SCP function: Download remote files or directories to local, if you want to upload or want to download the directory, the best way is to use tar compression, isThe most sensible choice..Download something from a remote host

NDK Development references (local references, global references, virtual global references)

1, first lead me to meet a problem (I think first write the question, so the impression deeper engraved a bit):Android Java layer when calling local JNI code, will maintain a local reference table (maximum length is 512), general JNI function call

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