Update README.md

Author: riti2409

README.md

@@ -8,3 +8,7 @@ DBMS_SQL Notes
   https://www.youtube.com/playlist?list=PLL8qj6F8dGlSZYUFrX6ASTdFWiUlLjguc (Tutorials space)
 
 - PDF(of notes): 
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+- ![sql-basics-cheat-sheet-a4-page-1](https://user-images.githubusercontent.com/65703138/150641076-dd864e47-41fd-46e5-87a5-6e4c34326c96.png)
+
+- ![sql-basics-cheat-sheet-a4-page-2](https://user-images.githubusercontent.com/65703138/150641077-f19c4ada-751b-4117-ae25-a3c573928c80.png)