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MySQL

Getting started:

• http://www.sqlteaching.com/
• https://www.codecademy.com/courses/learn-sql

Related tutorials:

• MySQL-CLI: https://www.youtube.com/playlist?list=PLfdtiltiRHWEw4-kRrh1ZZy_3OcQxTn7P
• Analyzing Business Metrics: https://www.codecademy.com/learn/sql-analyzing-business-metrics

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#MongoDB 3.2.x Replica Sets on AWS EC2 A MongoDB replica set provides a mechanism to allow for a reliable database services. The basic replica set consists of three servers, a primary, a secondary and an arbitrator. The primary and secondary both hold a copy of the data. The arbitrator is normally a low spec server which just monitors the other servers and help with the failover process. In production, there can be more than three servers.

To setup mongo as a replica set on Amazon Web Services EC2 you need to first setup a security group with ssh on port 22 and mongodb on port 27017. You then need to create three servers. Select Ubuntu 14.04 LTS x64 and a micro (or bigger depending on your database size, ideally you should have enough memory to match your database size) instance for the primary and secondary and a nano instance for the arbitrator.

##Adjust the File System on each Server The operating system by default will update the last access time on a file. In a high data throughput database application

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<?php
    #Incluiremos la libreria nusoap.
    require_once(getcwd() ."/third_party/nusoap/lib/nusoap.php");

    #Instanciaremos la clase soap_server que proviene de la librería nusoap.
    $server = new soap_server();

    $namespace = "http://localhost/ws_test/index.php";
    $server->wsdl->schemaTargetNamespace = $namespace;

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function refreshsize(){
tempvisscrollleft = window.pageXOffset || document.documentElement.scrollLeft;
tempvisscrolltop = window.pageYOffset || document.documentElement.scrollTop;

var cusid_ele = document.getElementsByClassName('stefanvdautostop');
for (var i = 0; i < cusid_ele.length; ++i) {
    var item = cusid_ele[i];  
	myElement = document.getElementsByTagName("video")[i];
	if(myElement){
	visposition = getPosition(myElement);

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Ubuntu 16.04 Developer Tools Installation

First things first !

sudo apt update
sudo apt upgrade

Standard Developer Tools

sudo apt-get install build-essential git

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LOWER(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(REPLACE(TRIM('My String'), ':', ''), ')', ''), '(', ''), ',', ''), '\\', ''), '\/', ''), '\"', ''), '?', ''), '\'', ''), '&', ''), '!', ''), '.', ''), ' ', '-'), '--', '-'), '--', '-')) AS `post_name`

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/*************************************************************/
// NumeroALetras
// The MIT License (MIT)
// 
// Copyright (c) 2015 Luis Alfredo Chee 
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights