Update NVA deployment instructions to unclude the 3 subnets creation steps

learn-pr/azure/control-network-traffic-flow-with-routes/includes/5-exercise-create-nva-vm.md

@@ -10,6 +10,37 @@ In the following steps, you'll deploy an NVA. You'll then update the Azure virtu
 
 [!INCLUDE[](../../../includes/azure-optional-exercise-subscription-note.md)]
 
+## Create the required subnets
+
+1. The public subnet:
+
+    ```azurecli
+    az network vnet subnet create \
+        --resource-group "myResourceGroupName" \
+        --vnet-name vnet \
+        --name publicsubnet \
+        --address-prefixes 10.0.0.0/24
+    ```
+
+2. The private subnet:
+    ```azurecli
+    az network vnet subnet create \
+        --resource-group "myResourceGroupName" \
+        --vnet-name vnet \
+        --name privatesubnet \
+        --address-prefixes 10.0.1.0/24
+    ```
+
+3. The dmz subnet:
+    ```azurecli
+    az network vnet subnet create \
+        --resource-group "myResourceGroupName" \
+        --vnet-name vnet \
+        --name dmzsubnet \
+        --address-prefixes 10.0.2.0/24
+    ```
+
+
 ## Deploy the network virtual appliance
 
 To build the NVA, deploy an Ubuntu LTS instance.

learn-pr/wwl-data-ai/design-implement-database-objects/includes/3-design-implement-tables.md

@@ -64,7 +64,7 @@ CREATE TABLE Employee (
     FirstName NVARCHAR(50),      -- ~2-100 bytes (avg 40)
     LastName NVARCHAR(50),       -- ~2-100 bytes (avg 40)
     HireDate DATE,               -- 3 bytes
-    Salary DECIMAL(10,2)         -- 5 bytes
+    Salary DECIMAL(10,2)         -- 9 bytes
 );  
 -- Estimated row size: 4 + 40 + 40 + 3 + 5 = ~92 bytes
 -- Plus row overhead (~7 bytes) = ~99 bytes per row