Create database file and schema

Modification in register script

db/db.php

@@ -0,0 +1,46 @@
+<?php
+    class DB extends SQLite3{
+        function __construct(){
+            $this->open('./ggdworkshop.db');
+        }
+        function schema(){
+            $sql =<<<EOF
+              CREATE TABLE IF NOT EXISTS Registro
+              (
+                id              INTEGER PRIMARY KEY AUTOINCREMENT,
+                nombre          VARCHAR(50) NOT NULL,
+                apellido        VARCHAR(50) NOT NULL,
+                titulo          VARCHAR(50),
+                afiliacion      VARCHAR(50),
+                ciudad          VARCHAR(50),
+                pais            VARCHAR(50),
+                email           VARCHAR(80) NOT NULL UNIQUE,
+                fechaLlegada    DATE,
+                fechaPartida    DATE,
+                financiacion    BOOLEAN     NOT NULL,
+                invitado        BOOLEAN     NOT NULL,
+                cartaInvitacion BOOELAN     NOT NULL,
+                roomingPref     VARCHAR(50),
+                roommate        VARCHAR(50),
+                fechaRegistro   DATETIME NOT NULL
+            );
+EOF;
+           $ret = $this->exec($sql);
+           if(!$ret){
+              echo $this->lastErrorMsg();
+           } else {
+              echo "Schema created successfully\n";
+           }
+           $this->close(); 
+        }  
+    }
+    
+    $db = new DB();
+    if(!$db){
+        echo $db->lastErrorMsg();
+    }else{
+        echo "Opened database successfully\n";
+    }
+    $db->schema();
+?>
+