private $tableName = '{{%full_pcs}}';

    private $Processors    = '{{%component_processors}}';
    private $Motherboards  = '{{%component_motherboards}}';
    private $VideoCards    = '{{%component_video_cards}}';
    private $RamModules    = '{{%component_ram_modules}}';
    private $Coolers       = '{{%component_coolers}}';
    private $PowerSupplies = '{{%component_power_supplies}}';
    private $Cases         = '{{%component_cases}}';
    private $HDDs          = '{{%component_hdds}}';
    private $SSDs          = '{{%component_ssds}}';
    private $AudioCards    = '{{%component_audio_cards}}';

    public function safeUp()
    {
        $tableOptions = null;
        if ($this->db->driverName === 'mysql') {
            // http://stackoverflow.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
            $tableOptions = 'CHARACTER SET utf8 COLLATE utf8_unicode_ci ENGINE=InnoDB';
        }

        $this->createTable($this->tableName, [
            'id'             => $this->primaryKey(),
            'processor_id'   => $this->integer()->notNull(),
            'motherboard_id' => $this->integer()->notNull(),
            'video_cards'    => $this->integer()->notNull(),
            'ram_modules'    => $this->integer()->notNull(),
            'case_id'        => $this->integer()->notNull(),
            'hdds'           => $this->integer(),
            'ssds'           => $this->integer(),
            'audio_card_id'  => $this->integer(),
            'accessories'    => $this->integer(),

            'created_at' => $this->integer(),
            'updated_at' => $this->integer(),
        ], $tableOptions);

        $fkName = 'fk-full_pcs-processor_id-processors-id';
        $this->addForeignKey($fkName, $this->tableName, 'processor_id', $this->Processors, 'id', 'CASCADE', 'CASCADE');
        $fkName = 'fk-full_pcs-motherboard_id-motherboards-id';
        $this->addForeignKey($fkName, $this->tableName, 'motherboard_id', $this->Motherboards, 'id', 'CASCADE', 'CASCADE');
        $fkName = 'fk-full_pcs-case_id-cases-id';
        $this->addForeignKey($fkName, $this->tableName, 'case_id', $this->Cases, 'id', 'CASCADE', 'CASCADE');

        $this->addPrimaryKey('pk-video_cards_id', $this->tableName, ['']);
    }

    public function safeDown()
    {
        $this->dropTable($this->tableName);
    }