--- a/managedb.php	Sun Dec 15 23:46:19 2013 +0200
+++ b/managedb.php	Sun Dec 15 23:46:41 2013 +0200
@@ -685,6 +685,27 @@
   exit;
 }
 
+// Validate tables data
+$errors = FALSE;
+foreach ($sqlTables as $table => $data)
+{
+  if (strtolower($table) != $table)
+  {
+    echo "Invalid table definition '".$table."', table name must be lower case.\n";
+    $errors = TRUE;
+  }
+  
+  foreach ($data as $def)
+  if (strtolower($def[0]) != $def[0])
+  {
+    echo "Invalid table definition '".$table."', column key '".$def[0]."' must be lower case.\n";
+    $errors = TRUE;
+  }
+}
+
+if ($errors)
+  die("Errors in table definitions.\n");
+
 
 // Act according to specified command
 $addTestData = FALSE;