Added person_target migration.

database/migrations/2018_09_03_091643_create_person_targets_table.php

@@ -0,0 +1,54 @@
+<?php
+
+use Illuminate\Support\Facades\Schema;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Database\Migrations\Migration;
+
+class CreatePersonTargetsTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('person_targets', function (Blueprint $table) {
+            $table->increments('id');
+            
+            // Person reference to the person which has to pay/receive the
+            // target
+            $table->integer('person_id')->unsigned();
+            $table->foreign('person_id')->references('id')->on('people')
+                  ->onDelete('restrict');
+
+            // The date on which the debt arises
+            $table->date('date');
+
+            // The amount of the debt
+            $table->float('amount', 8, 2);
+
+            // The type of the target. It can be either a payable or a
+            // receivable. A payable is of type 'expediture' and a receivable is
+            // of type 'income'.
+            $table->integer('io_type')->unsigned();
+            $table->foreign('io_type')->references('id')->on('io_types')
+                  ->onDelete('no action');
+
+            // A reference text which describes the target
+            $table->string('reference');
+
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('person_targets');
+    }
+}