update API for more simple approach.

SoilMoistureAPI/Data/SoilMoistureFlatContext.cs

@@ -0,0 +1,35 @@
+using Microsoft.EntityFrameworkCore;
+using SoilMoistureAPI.Models;
+
+namespace SoilMoistureAPI.Data
+{
+    public class SoilMoistureFlatContext : DbContext
+    {
+        public DbSet<SoilMoistureFlat> SoilMoisturesFlat { get; set; }
+
+        public SoilMoistureFlatContext(DbContextOptions<SoilMoistureFlatContext> options)
+            : base(options)
+        {
+        }
+
+        protected override void OnModelCreating(ModelBuilder modelBuilder)
+        {
+            // Optionally configure the SoilMoistureFlat entity
+            modelBuilder.Entity<SoilMoistureFlat>(entity =>
+            {
+                entity.HasKey(e => e.Id);
+                entity.Property(e => e.DeviceId)
+                      .IsRequired();
+                entity.Property(e => e.MoistureLevel)
+                      .IsRequired();
+                entity.Property(e => e.Nickname)
+                      .IsRequired();
+
+                // Optionally, set default SQL for Timestamp if using SQL Server
+                // entity.Property(e => e.Timestamp).HasDefaultValueSql("GETUTCDATE()");
+            });
+
+            base.OnModelCreating(modelBuilder);
+        }
+    }
+}