diff --git a/catalogue/rdbms_classes.pptx b/catalogue/rdbms_classes.pptx
index 04f617ad4950bc0ec06fd88688631b357d188fad..a0fd81576150e58cceba195ac47adbc886eafdb3 100644
Binary files a/catalogue/rdbms_classes.pptx and b/catalogue/rdbms_classes.pptx differ