diff --git a/vendor/model/Database.class.php b/vendor/model/Database.class.php
index 75b4720..f0eab8c 100644
--- a/vendor/model/Database.class.php
+++ b/vendor/model/Database.class.php
@@ -128,21 +128,31 @@ class Database
 								     :last_modified,
 								     :db_accessible)';
 
-		/** Preparo o sql para receber os valores */
-		$this->stmt = $this->connection->connect()->prepare($this->sql);	
+		try{
 
+			/** Preparo o sql para receber os valores */
+			$this->stmt = $this->connection->connect()->prepare($this->sql);
+			
+			/** Inicia a transação */
+			$this->connection->connect()->beginTransaction();					
 
-		/** Inicia a transação */
-		$this->connection->connect()->beginTransaction();			
+			/** Preencho os parâmetros do SQL */
+			$this->stmt->bindParam(':client_id', $this->clientId);
+			$this->stmt->bindParam(':file_size', $this->fileSize);
+			$this->stmt->bindParam(':last_modified', $this->lastModified);
+			$this->stmt->bindParam(':db_accessible', $this->dbAccessible);
 
-		/** Preencho os parâmetros do SQL */
-		$this->stmt->bindParam(':client_id', $this->clientId);
-		$this->stmt->bindParam(':file_size', $this->fileSize);
-		$this->stmt->bindParam(':last_modified', $this->lastModified);
-		$this->stmt->bindParam(':db_accessible', $this->dbAccessible);
+			/** Executo o SQL */
+			$this->stmt->execute();		
 
-		/** Executo o SQL */
-		$this->stmt->execute();		
+		} catch (\Exception $exception) {
+
+			/** Desfaz a transação */
+			$this->connection->connect()->rollback();
+
+            /** Informo */
+            throw new InvalidArgumentException($exception->getMessage(), 0);
+		}		
 					
 	}
 
@@ -156,10 +166,11 @@ class Database
 		$this->sql = 'delete from db
 					  where  client_id = :client_id';
 
-		/** Preparo o sql para receber os valores */
-		$this->stmt = $this->connection->connect()->prepare($this->sql);
 
-		try {
+		try {					  
+
+			/** Preparo o sql para receber os valores */
+			$this->stmt = $this->connection->connect()->prepare($this->sql);
 
 			/** Inicia a transação */
 			$this->connection->connect()->beginTransaction();
@@ -179,9 +190,8 @@ class Database
 			/** Desfaz a transação */
 			$this->connection->connect()->rollback();
 
-			/** Captura o erro */
-			array_push($this->errors, 'Error:: ' . $exception->getMessage());
-			return false;
+            /** Informo */
+            throw new InvalidArgumentException($exception->getMessage(), 0);
 		}
 	}