diff --git a/core/lib/Drupal/Core/Database/Connection.php b/core/lib/Drupal/Core/Database/Connection.php
index 064adc2..00e2cbe 100644
--- a/core/lib/Drupal/Core/Database/Connection.php
+++ b/core/lib/Drupal/Core/Database/Connection.php
@@ -94,6 +94,13 @@
   protected $transactionalDDLSupport = FALSE;
 
   /**
+   * Whether this database connection supports foreign key constraints
+   *
+   * @var bool
+   */
+  protected $foreignKeyConstraintSupport = TRUE;
+
+  /**
    * An index used to generate unique temporary table names.
    *
    * @var integer
@@ -1128,6 +1135,21 @@ public function supportsTransactionalDDL() {
   }
 
   /**
+   * Determines if this driver supports foreign key constraints.
+   *
+   * Foreign key constraints ensure referential integrity is maintained,
+   * such as by cascading a deletion or causing it to fail if it would leave
+   * foreign key references to a non-existent record.
+   *
+   * @return
+   *   TRUE if this connection supports foreign key constraints, FALSE
+   *   otherwise.
+   */
+  public function supportsForeignKeyConstraints() {
+    return $this->foreignKeyConstraintSupport;
+  }
+
+  /**
    * Returns the name of the PDO driver for this connection.
    */
   abstract public function databaseType();
diff --git a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
index 9e0e65f..d437dd7 100644
--- a/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/mysql/Connection.php
@@ -45,6 +45,9 @@ public function __construct(PDO $connection, array $connection_options = array()
     // This driver defaults to transaction support, except if explicitly passed FALSE.
     $this->transactionSupport = !isset($connection_options['transactions']) || ($connection_options['transactions'] !== FALSE);
 
+    // This driver does not implement MySQL's foreign key constraint support
+    $this->foreignKeyConstraintSupport = FALSE;
+
     // MySQL never supports transactional DDL.
     $this->transactionalDDLSupport = FALSE;
 
diff --git a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
index 30e9e01..e88de8a 100644
--- a/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/pgsql/Connection.php
@@ -43,6 +43,9 @@ public function __construct(PDO $connection, array $connection_options) {
     // This driver defaults to transaction support, except if explicitly passed FALSE.
     $this->transactionSupport = !isset($connection_options['transactions']) || ($connection_options['transactions'] !== FALSE);
 
+    // This driver does not implement PostgreSQL's foreign key constraint support
+    $this->foreignKeyConstraintSupport = FALSE;
+
     // Transactional DDL is always available in PostgreSQL,
     // but we'll only enable it if standard transactions are.
     $this->transactionalDDLSupport = $this->transactionSupport;
diff --git a/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php b/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
index 5aaf7da..23d2dab 100644
--- a/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
+++ b/core/lib/Drupal/Core/Database/Driver/sqlite/Connection.php
@@ -77,6 +77,9 @@ public function __construct(PDO $connection, array $connection_options) {
     // This driver defaults to transaction support, except if explicitly passed FALSE.
     $this->transactionSupport = $this->transactionalDDLSupport = !isset($connection_options['transactions']) || $connection_options['transactions'] !== FALSE;
 
+    // This driver does not implement sqlite's foreign key constraint support
+    $this->foreignKeyConstraintSupport = FALSE;
+
     $this->connectionOptions = $connection_options;
 
     // Attach one database for each registered prefix.