Update Session08 Backend.md

fixed some parts of fixes

ProjectOrientedSessions/Session08/Session08 Backend.md

@@ -1,12 +1,24 @@
+# Session 8
+Profile + some fixes to database
 
+## Fixes
+- [ ] Check for missing `.ValueGeneratedOnAdd()` in all entity configurations in ```Infrastructure/Configurations```.
 
-# Fixes
-- [ ] Check for missing `.ValueGeneratedOnAdd()` in all entity configuration.
 - [ ] Adjust the database setup according to the second version of ERD
-- [ ] new erd: https://github.com/TheOrderOfPhoenix/ASP.NET/blob/main/02_ProjectOrientedSessions/docs/AlibabaERD-Version02.pdf
+    - Some aggregates are added/modified to generate the new database
-- [ ] Pay attention to the changes in logic and implementation of Person table (Id number is not unique anymore)
+    - New ERD: https://github.com/TheOrderOfPhoenix/ASP.NET/blob/main/ProjectOrientedSessions/docs/AlibabaERD-Version02.pdf
+    - Note: Pay attention to the changes in logic and implementation of Person table (Id number is not unique anymore). So remove this code in PersonConfiguration:
+
+      ```
+      builder.HasIndex(p => p.IdNumber)
+          .IsUnique();
+      ```
+
 - [ ] Add actual data in `TicketStatus`, `Gender`, `TransactionTypes`
-- [ ] Add data in `Seat`, `Person`, `TicketOrder`, `Transaction`, `Ticket` for test. It is recommended to write python code for generating data for Seat table, according to the data already stored in Transportation and related Vehicle data
+    - You can either add the data in DbContext or the database itself
+
+- [ ] Add data in `Seat`, `Person`, `TicketOrder`, `Transaction`, `Ticket` for test. It is recommended to write python code for generating data for Seat table, according to the data already stored in Transportation and related Vehicle data. There is also a SeatGenerator in this repository, as well.
+
 - [ ] Fix claim extraction (`sub` → standardize JWT claim mapping). (`IUserContext` implmentation)
 
 ### ✅ Profile Page (Account Info Tab)