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Elaborar su memo ficha de las sentencias más usuales en sql –oracle con el fin de tener un soporte para cada práctica realizada, donde las mínimas son las propuestas pero usted podrá tener otras que consideren necesarias. Se requiere que el estudiante realice el siguiente trabajo: | |
Investigar cada palabra o sentencia y escribir su sintaxis. Puede ir acompañado de un ejemplo. | |
• NOT NULL | |
La condición IS NOT NULL es usada para testear si un valor es NULL. Es una condición usada en Oracle, Sentencias SQL y código PLSQL. | |
EJ: | |
SELECT * |
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internal static void LocalLog(Exception trace) | |
{ | |
try | |
{ | |
string InfoText = string.Empty; | |
if (trace != null) | |
{ | |
InfoText += Environment.NewLine + Newtonsoft.Json.JsonConvert.SerializeObject(trace, Newtonsoft.Json.Formatting.Indented) | |
+ Environment.NewLine; |
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using Newtonsoft.Json; | |
using RestSharp; | |
using System; | |
using System.Collections; | |
using System.Collections.Generic; | |
using System.Configuration; | |
using System.Net; | |
namespace NodeClientAdmin | |
{ |
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public async Task<ActionResult> ProcesosEnParalelo() | |
{ | |
var stopWatch = new StopWatch(); | |
stopWatch.Start(); | |
var tarea1 = Proceso1(); | |
var tarea2 = Proceso2("Felipe"); |
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http://blog.jacagudelo.com/ | |
Conectar Display | |
https://www.losant.com/blog/how-to-connect-lcd-esp8266-nodemcu | |
http://blogmasterwalkershop.com.br/embarcados/nodemcu/nodemcu-utilizando-com-display-lcd-16x2/ | |
http://embedded-lab.com/blog/tutorial-3-connecting-oled-display-esp8266/ | |
https://naylampmechatronics.com/blog/35_Tutorial--LCD-con-I2C-controla-un-LCD-con-so.html |
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new (function() { | |
var ext = this; | |
var fs = require('fs'); | |
// Cleanup function when the extension is unloaded | |
ext._shutdown = function () | |
{ | |
for (pin = 2; pin < 28; pin++) | |
{ | |
if (fs.existsSync("/sys/class/gpio/gpio" + pin)) |
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crontab -e | |
0 23 * * * /root/take_backup.sh |
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MYSQL_DATABASE= | |
MYSQL_USER=root | |
MYSQL_PASSWORD= | |
MYSQL_ROOT_PASSWORD= | |
MYSQL_PORT=3306 |
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Movile Web Vs Native Apps | |
Native Apps | |
87% | |
- Push Notifications vuelve a atraer a los usuarios | |
- Icono en el Home Screen hace el acceso facil | |
- Acceso a caracteristicas nativas del dispositivo como la camara | |
- Posibilidad de trabajar offline | |
Dificultad de hacer aplicaciones nativas |
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sudo swapon -s | |
sudo fallocate -l 4G /swapfile | |
sudo chmod 600 /swapfile | |
sudo mkswap /swapfile | |
sudo swapon /swapfile |