diff --git a/SDS.md b/SDS.md
index 4e11279..51a583b 100644
--- a/SDS.md
+++ b/SDS.md
@@ -22,22 +22,34 @@
   |Notifications/Alerts|Medium| We wish to have an option to notify the students about upcoming submition dates and/or messages from student/lecturer.|
   |Simple UI|Medium-Low| The UI should be as simple as can be, yet contain all features. It's very important to make the Dashboard a "clean" working enviorment with no distractions|
 
-4.**Sequence Diagram**
+2. **Deployment Diagram**
+
+ [Deployment Diagram Page](https://github.com/sagidayan/SE-Hub/wiki/Deployment-Diagram)
+
+3. **Class diagram & CRC cards**
+
+ [Class diagram & CRC cards - Wiki Page](https://github.com/sagidayan/SE-Hub/wiki/Class-diagram-&-CRC-Cards)
+
+4. **Sequence Diagram**
+
  **Send Class message**
- 
- 
-![Sequence Diagram](http://i61.tinypic.com/rqy9a1.png)
+ ![Sequence Diagram](http://i61.tinypic.com/rqy9a1.png)
 
-1. The lecturer must login with valid account.
-2. Once in lecturer dashboard, press messaging system button.
-3. Choose message type - private/group/class. (in this case Class)
-4. Input message.
-5. Check optional fields (Notify all/on-response).
-6. Send or cancel message.
-7. Returns to messaging system window.
+ 1. The lecturer must login with valid account.
+ 2. Once in lecturer dashboard, press messaging system button.
+ 3. Choose message type - private/group/class. (in this case Class)
+ 4. Input message.
+ 5. Check optional fields (Notify all/on-response).
+ 6. Send or cancel message.
+ 7. Returns to messaging system window.
 
 
-6.**Non-Functional Demands**
+5. **Persistence**
+
+ [Persistence Page](https://github.com/sagidayan/SE-Hub/wiki/Persistence)
+
+6. **Non-Functional Demands**
+
 * **a. Simple to use-** UI would be simple and "clean" so that usage will be as easy as possible.
 * **b. Secure-** Login via Github will suffice a secure connection to an already existing profile.
 * **c. Generic Structure-** Dashboard is designed in a way that it can be used for different Courses/Colleges