diff --git a/.idea/php.xml b/.idea/php.xml
index b2ca53c..639f74d 100644
--- a/.idea/php.xml
+++ b/.idea/php.xml
@@ -9,7 +9,7 @@
   <component name="PHPCodeSnifferOptionsConfiguration">
     <option name="transferred" value="true" />
   </component>
-  <component name="PhpProjectSharedConfiguration" php_language_level="8.2" />
+  <component name="PhpProjectSharedConfiguration" php_language_level="8.1" />
   <component name="PhpStanOptionsConfiguration">
     <option name="transferred" value="true" />
   </component>
diff --git a/Source/API/a b/Source/API/a
deleted file mode 100644
index e69de29..0000000
diff --git a/Source/API/script/Gateway/Connection.php b/Source/API/script/Gateway/Connection.php
new file mode 100644
index 0000000..768245b
--- /dev/null
+++ b/Source/API/script/Gateway/Connection.php
@@ -0,0 +1,37 @@
+<?php
+
+namespace API\Gateway;
+
+use PDO;
+
+class Connection extends PDO
+{
+    private $stmt;
+
+    public function __construct(string $dsn, string $username, string $password)
+    {
+        parent::__construct($dsn, $username, $password);
+        $this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    }
+
+
+    /** * @param string $query
+     * @param array $parameters *
+     * @return bool Returns `true` on success, `false` otherwise
+     */
+    public function executeQuery(string $query, array $parameters = []): bool
+    {
+        $this->stmt = parent::prepare($query);
+        foreach ($parameters as $name => $value) {
+            $this->stmt->bindValue($name, $value[0], $value[1]);
+        }
+
+        return $this->stmt->execute();
+    }
+
+    public function getResults(): array
+    {
+        return $this->stmt->fetchall();
+
+    }
+}
\ No newline at end of file
diff --git a/Source/API/script/Gateway/GatewayQuestion.php b/Source/API/script/Gateway/GatewayQuestion.php
new file mode 100644
index 0000000..45f7bbe
--- /dev/null
+++ b/Source/API/script/Gateway/GatewayQuestion.php
@@ -0,0 +1,61 @@
+<?php
+
+namespace API\Gateway;
+
+use API\PDO;
+use FORM_BusinessClass\BoxQuestion;
+use FORM_BusinessClass\Question;
+
+class GatewayQuestion
+{
+    private Connection $connection;
+
+    public function __construct(Connection  $connection)
+    {
+        $this->connection = $connection;
+    }
+
+    public function insertQuestion(Question $question, string $idForm)
+    {
+        $query = "INSERT INTO Question(content, type, form) VALUES(:content, :type, :form)";
+        $this->connection->executeQuery($query, array(
+            ':content' => array($question->getContent(), PDO::PARAM_STR),
+            ':type' => array(get_class($question), PDO::PARAM_STR),
+            ':form' => array($idForm, PDO::PARAM_STR)
+        ));
+
+        $this->connection->executeQuery();
+
+        $idQuestion = $this->connection->lastInsertId();
+
+        if(get_class($question) == BoxQuestion::class){
+            $listPossibleResponse = $question->getPossibleResponses();
+
+            for($i = 0; $i < count($listPossibleResponse); $i++){
+
+                $query = "INSERT INTO PossibleResponse(content) VALUES(:content)";
+                $this->connection->executeQuery($query, array(
+                    ':content' => array($listPossibleResponse[$i], PDO::PARAM_STR)
+                ));
+
+                $this->connection->executeQuery();
+
+                $idPossibleReponse = $this->connection->lastInsertId();
+
+                $query = "INSERT INTO Propose(question, possibleResponse) VALUES(:question, :possibleResponse)";
+                $this->connection->executeQuery($query, array(
+                    ':question' => array($idQuestion, PDO::PARAM_INT),
+                    ':possibleResponse' => array($idPossibleReponse, PDO::PARAM_INT)
+                ));
+
+                $this->connection->executeQuery();
+
+
+                foreach ($question->getCategories()[$i] as $keyword){
+                    $gatewayForm = new GatewayForm($this->connection);
+                    $gatewayForm->assignKeywordToQuestion($keyword, $idQuestion);
+                }
+            }
+        }
+    }
+}
\ No newline at end of file