diff --git a/courses/databases_nosql/key_concepts.md b/courses/databases_nosql/key_concepts.md
index f9f8fcd..0dfa7ea 100644
--- a/courses/databases_nosql/key_concepts.md
+++ b/courses/databases_nosql/key_concepts.md
@@ -80,10 +80,10 @@ When the amount of data crosses the capacity of a single node, we need to think
 
 
 
-<p id="gdcalert2" ><span style="color: red; font-weight: bold">>>>>>  gd2md-html alert: inline image link here (to images/image2.png). Store image on your image server and adjust path/filename/extension if necessary. </span><br>(<a href="#">Back to top</a>)(<a href="#gdcalert3">Next alert</a>)<br><span style="color: red; font-weight: bold">>>>>> </span></p>
+<p id="gdcalert2" ><span style="color: red; font-weight: bold" images\database_sharding.png> </span><br>(<a href="#">Back to top</a>)(<a href="#gdcalert3">Next alert</a>)<br><span style="color: red; font-weight: bold">>>>>> </span></p>
 
 
-![alt_text](images/image2.png "image_tooltip")
+![alt_text]( images\database_sharding.png "Sharding")
 
 
 **<span style="text-decoration:underline;"> Sharding example</span>**
@@ -120,10 +120,10 @@ Say that our hash function h() generates a 32-bit integer. Then, to determine to
 
 
 
-<p id="gdcalert3" ><span style="color: red; font-weight: bold">>>>>>  gd2md-html alert: inline image link here (to images/image3.png). Store image on your image server and adjust path/filename/extension if necessary. </span><br>(<a href="#">Back to top</a>)(<a href="#gdcalert4">Next alert</a>)<br><span style="color: red; font-weight: bold">>>>>> </span></p>
+<p id="gdcalert3" ><span style="color: red; font-weight: bold"> images\consistent_hashing.png </span></p>
 
 
-![alt_text](images/image3.png "image_tooltip")
+![alt_text]( images\consistent_hashing.png "Consistent Hashing")
 
 
 <span style="text-decoration:underline;">Consistent hashing illustration</span>