PL/SQL Developer usage tips, shortcut keys

Label:PL/SQL Developer usage tips, shortcut keys1, set the keyword automatic capitalization: tools->preferences->editor, will keyword case select uppercase. When you enter SQL statements in a window, the keywords are automatically capitalized,

Use convert in SQL server2000 to get the datetime data type style (full)

Label:Use convert in SQL server2000 to get the datetime data type style (full)Processing of date data formats, two examples:CONVERT (varchar (16), time one, 20) results: 2007-02-01 08:02/* time is generally a field in the GETDATE () function or data

Cryptographic algorithms-md5, RSA, DES

Label:Recently because to do a cryptographic function, a simple understanding of the encryption algorithm, now more commonly used there are three encryption algorithm MD5 encryption algorithm, RSA encryption algorithm, DES encryption algorithm.MD5

Yii2.0 Simple API to implement restful style

Label:First, create a databaseFirst, create a database named Yii2basic in MySQL and create a table named player. Second, the configuration<?phpreturn [ ' class ' = ' yii\db\connection ', ' dsn ' = '


Label:Today, when it comes to the question of string conversion to int, the conversion problem of signed number, we find that we need to look back into the problem of the system. Find some information, think can also, borrow a paragraph here and


Label:16 binary: Use 16 as the base counting system. 10 to 15 are represented by the number 0-9 and the letter a-f (or its uppercase a-f).Hexadecimal number converted to decimal number2 binary, with two Arabic numerals: 0, 1;8 binary, with eight

root directory parent Directory current directory

Label:/Represents the root directory./indicates the current directory.. /indicates parent directory.. /.. /indicates upper parent directory------------------------------CD/switch to root directory CD./switch to the current directory (or CD.) Cd..

CentOS7 vs CENTOS6

Label:The CentOS Project has announced general availability of CentOS-7 and the first release of the free Linux distro based on the Source code for Red Hat Enterprise Linux (RHEL) 7.It ' s also the first major CentOS release to ship since the CentOS

Gitlab,bugzilla and Wikimedia installation and configuration

Label:The operating system used is Ubuntu Server 14.04.3 lts version.I. Gitlab installation and Configuration1. Depending on the installation and configurationsudo apt-get install curl openssh-server ca-certificates postfix2. Download the

Django 1.9.6 Official Document Part II (Chinese translation)

Label:Note: Recently began to learn Python's Django framework, in order to urge learning, forcing themselves to translate the official documents, is a learning, but also a kind of accumulation! Because the experience is insufficient, the mistake

5 minutes hack WPA2 password (turn)

Label:First of all, we need to understand a mathematical operation calledhashing Algorithm (hash),This is a non-inverse, you can not calculate the results of the original unknown is how much, and sometimes we need a different unknown by the

Constructors and destructors for derived classes and two semantics and virtual functions in multiple inheritance

Label:The primary function of a destructor is to initialize a data member.1 constructors for derived classes The general form of a constructor definition for a derived class is:Derived class Name:: derived class name (required parameter for base


Label:An operator is a special symbol that represents the operation, assignment, and comparison of data.The Java language uses operators to concatenating one or more operands into an execution statement to implement a specific function.Operators in

Zabbix deployment

Label:Preparation before installation:Yum-y Install beecrypt beecry-devel Curl curl-devel freetype freetype-devel fontconfig fontconfig-devel gettext gettext-d Evel ImageMagick Imagemagick-devel mingw32-Iconv.noarch libmcrypt libmcrypt-devel libpng

Joomla Related Introduction

Label:joomla! Software Introduction"Joomla! Overview"A well-known foreign content management system."Joomla! Basic Introduction"Joomla! is a well-known foreign content management System (contents Management System, CMS), it belongs to the portal

GIT pure command operation, Install,clone, Commit,push,pull, version fallback, undo update, Branch creation/switchover/update/commit/merge, code conflict

Label:GIT pure command operation, Install,clone, Commit,push,pull, version fallback, undo update, Branch creation/switchover/update/commit/merge, code conflict This is followed by the next release of the distributed repository--windows git

"Summary" leverages AWS for high availability and cloud disaster preparedness

Label:: Download full MP4 video1. Summary of Churyang Enterprise Cloud can start with disaster preparedness cloud To make applications highly available and resilient, the cloud platform itself should provide disaster preparedness and HA


Label:Search Software: Brew search software name, such as Brew search wgetInstall software: Brew install software name, such as Brew install wgetUninstall software: Brew remove software name, such as brew remove wgetWhat is 0 homebrew?"Homebrew

Open source Jabber (XMPP) solutions for building internal instant messaging services

Label:Jabber is a well-known Instant Messaging server, it is a free open source software, allowing users to rack their own Instant Messaging server, can be used on the Internet, but also can be applied in the LAN.XMPP (Extensible Messaging Field

Common tool Classes

Tags: <pre name= "code" class= "HTML" >public class Tools {private static final String regex = "[a-za-z0-9][a-za-z0-9_\\.\\- ]*[a-za-z0-9]@ ([a-za-z0-9_\\-]+[\\.]) {1,} [a-za-z0-9_\\-]+];p ublic static final String FORMAT = "Yyyy-mm-dd

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