implemented basic crud logic; NB: CONNECTION STRING IN PROGRAM.CS IS EMPTY

Backend.Api/Data/DataContext.cs

@@ -0,0 +1,14 @@
+using Microsoft.EntityFrameworkCore;
+
+namespace Backend.Api.Data
+{
+    public class DataContext : DbContext
+    {
+        public DataContext(DbContextOptions<DataContext> options) : base(options)
+        {
+
+        }
+        public DbSet<User> Users { get; set; }
+        public DbSet<Vehicle> Vehicles { get; set; }
+    }
+}