Fleshed out entity classes and created command to create student

BrightGlimmer.Data/Migrations/20190424233105_CreateDatabase.Designer.cs

@@ -9,7 +9,7 @@ using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
 namespace BrightGlimmer.Data.Migrations
 {
     [DbContext(typeof(BgContext))]
-    [Migration("20190424174147_CreateDatabase")]
+    [Migration("20190424233105_CreateDatabase")]
     partial class CreateDatabase
     {
         protected override void BuildTargetModel(ModelBuilder modelBuilder)
@@ -157,6 +157,9 @@ namespace BrightGlimmer.Data.Migrations
 
                     b.HasIndex("AddressId");
 
+                    b.HasIndex("StudentNumber")
+                        .IsUnique();
+
                     b.ToTable("Students");
                 });
 

BrightGlimmer.Data/Migrations/20190424233105_CreateDatabase.cs

@@ -147,6 +147,12 @@ namespace BrightGlimmer.Data.Migrations
                 name: "IX_Students_AddressId",
                 table: "Students",
                 column: "AddressId");
+
+            migrationBuilder.CreateIndex(
+                name: "IX_Students_StudentNumber",
+                table: "Students",
+                column: "StudentNumber",
+                unique: true);
         }
 
         protected override void Down(MigrationBuilder migrationBuilder)

BrightGlimmer.Data/Migrations/BgContextModelSnapshot.cs

@@ -155,6 +155,9 @@ namespace BrightGlimmer.Data.Migrations
 
                     b.HasIndex("AddressId");
 
+                    b.HasIndex("StudentNumber")
+                        .IsUnique();
+
                     b.ToTable("Students");
                 });