Made documentation on migrations

Backend/Database/KeyWord.php

@@ -1,12 +1,27 @@
 <?php
+//require bootstrap aka our database connection
 require_once "../../bootstrap.php";
 use Illuminate\Database\Capsule\Manager as Capsule;
 use Illuminate\Database\Schema\Blueprint;
 use Illuminate\Support\Facades\Schema;
 
+//Create key_words table with the rows as id, keyWord, fkGroup and timestamp
 Capsule::schema()->create("key_words", function (Blueprint $table){
     $table->id();
     $table->string('keyWord');
     $table->foreignId("fkGroup")->constrained("groups");
     $table->timestamps();
-});
+});
+
+
+/*
+Syntex to create table in database
+
+$table->string("texts");
+
+$table => valuable;
+string => datatype;
+("texts") => name for the row in the database
+foreignId => foreignId key row name in the database;
+constrained => targeted table name;
+*/