Minor rewords

Author: javiereguiluz

testing/database.rst

@@ -31,17 +31,16 @@ about :ref:`using multiple .env files in Symfony applications <configuration-mul
 Resetting the Database Automatically Before each Test
 -----------------------------------------------------
 
-Tests should be independent from each other to avoid side effects. However, if
-some test modifies the database (for example by adding or removing an element)
-it could impact the other tests. Run the following command to install a bundle
-that ensures that each test is run with a new and unmodified copy of the database:
+Tests should be independent from each other to avoid side effects. For example,
+if some test modifies the database (by adding or removing an entity) it could
+change the results of other tests. Run the following command to install a bundle
+that ensures that each test is run with the same unmodified database:
 
 .. code-block:: terminal
 
     $ composer require --dev dama/doctrine-test-bundle
 
-Now, enable it as a PHPUnit extension (PHPUnit 8 or higher) or a listener
-(PHPUnit 7 or lower):
+Now, enable it as a PHPUnit extension or listener:
 
 .. code-block:: xml
 
@@ -60,10 +59,10 @@ Now, enable it as a PHPUnit extension (PHPUnit 8 or higher) or a listener
         </listeners>
     </phpunit>
 
-This bundle uses a clever trick to create a new database for each test without
-scarifying performance: it begins a transaction before every test case and rolls
-it back automatically after the test finished. Read more in the documentation of
-the `DAMADoctrineTestBundle`_.
+This bundle uses a clever trick to avoid side effects without scarifying
+performance: it begins a database transaction before every test and rolls it
+back automatically after the test finishes to undo all changes. Read more in the
+documentation of the `DAMADoctrineTestBundle`_.
 
 .. _doctrine-fixtures: