$model = Mage::getModel('task_creation/details');

   $collections = $model->getCollection();

foreach($collections as $collection)
{
  print_r($collection->getdata(''));
}

<?php
namespace FMENewsModel;

class News extends MagentoFrameworkModelAbstractModel implements NewsInterface, MagentoFrameworkDataObjectIdentityInterface
{
    const CACHE_TAG = 'id';
    const ENABLED = 1;
    const DISABLED = 0;
    const COMPLETE = 0;
    const LEFT = 1;
    const RIGHT = 2;


    protected function _construct()
    {
        $this->_init('FMENewsModelResourceModelNews');
    }

    public function getIdentities()
    {
        return [self::CACHE_TAG . '_' . $this->getId()];
    }



}

<?php
namespace FMENewsModel;
interface NewsInterface
{

}

<?php
namespace FMENewsModelResourceModel;

class News extends MagentoFrameworkModelResourceModelDbAbstractDb
{
    protected function _construct()
    {
        $this->_init('fme_news','id');
    }

<?php
namespace FMENewsModelResourceModelNews;
class Collection extends MagentoFrameworkModelResourceModelDbCollectionAbstractCollection
{
    protected $_idFieldName = 'id';
    protected function _construct()
    {
        $this->_init('FMENewsModelNews','FMENewsModelResourceModelNews');
    }
}

protected $newscollectionFactory;
    public function __construct(....
FMENewsModelResourceModelNewsCollectionFactory $newscollectionFactory
    ....)
    {
        ....
        $this->newscollectionFactory = $newscollectionFactory;
            .....
    }
    public function getNews()
    {


        $newsCollection = $this->newscollectionFactory->create();
        return $newsCollection;
    }

$hostname = "yourhost";
$username = "youruser";
$password = "yourpwd";
$database="yourdb";
ini_set('display_errors', 1);
$connection = mysqli_connect($hostname, $username, $password, $database);
use MagentoStoreModelStore;
use MagentoStoreModelStoreManager;
require 'app/bootstrap.php';
$opt['group'] = 'default';
$opt['standaloneProcessStarted'] = '0';
$params = $_SERVER;
/* you can out your store id here */
$params[StoreManager::PARAM_RUN_CODE] = 'admin';
$params[Store::CUSTOM_ENTRY_POINT_PARAM] = true;

/* create application */
$bootstrap = MagentoFrameworkAppBootstrap::create(BP, $params);
/* the applocation
/** @var MagentoFrameworkAppCron $app */

$app = $bootstrap->createApplication('MagentoFrameworkAppCron', ['parameters' => $opt]);
//$bootstrap->run($app);

$objectManagerr = MagentoFrameworkAppObjectManager::getInstance();
$appState = $objectManagerr->get("MagentoFrameworkAppState");
$appState->setAreaCode("global");
$categoryFactory = $objectManagerr->create('MagentoCatalogModelResourceModelCategoryCollectionFactory');
$categoryy = $categoryFactory->create()
            ->addAttributeToSelect('*');
$category = $objectManagerr->get('MagentoCatalogModelCategoryFactory')->create()->getCollection()
        ->addAttributeToFilter('url_key','werbeartikel-kategorien')
        ->addFieldToSelect('name')
        ->getFirstItem();

private $_taskCollectionFactory;

public function __construct(
    ...
    TaskCreationModelResourceModeldetailsCollectionFactory $collectionFactory,
    ...
) {
    $this->_taskCollectionFactory = $collectionFactory;
   ...
}

public function getTaskCollection(){

    $collection = $this->_taskCollectionFactory->create();
    $collection->addAttributeToSelect('*')

    return $collection;
}

<?php

namespace InchooHelloworldControllerIndex;

use MagentoFrameworkAppActionAction;
use MagentoFrameworkAppActionContext;
use InchooHelloworldModelPostFactory;

class View extends Action
{
    /**
     * @var TutorialSimpleNewsModelNewsFactory
     */
    protected $_modelPostFactory;

    /**
     * @param Context $context
     * @param NewsFactory $modelNewsFactory
     */
    public function __construct(
        Context $context,
        PostFactory $modelPostFactory
    ) {
        parent::__construct($context);
        $this->_modelPostFactory = $modelPostFactory;
    }

    public function execute()
    {
        /**
         * When Magento get your model, it will generate a Factory class
         * for your model at var/generaton folder and we can get your
         * model by this way
         */
        $postModel = $this->_modelPostFactory->create();

        // Load the item with ID is 1
        $item = $postModel->load(1);
        var_dump($item->getData());

        // Get news collection
        $postCollection = $postModel->getCollection();
        // Load all data of collection
        var_dump($postCollection->getData());
    }
}

$objectManager = MagentoFrameworkAppObjectManager::getInstance();

$collection = $objectManager->get('VendorNameModuleNameModelClassName')
            ->getCollection()