owner id

src/nuget-host/Data/PackageVersion.cs

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+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace nuget_host.Data
+{
+    public class PackageVersion
+    {
+        [Required]
+        [ForeignKey("Package")]
+        public string PackageId { get; set; }
+
+        [Required]
+        public int Major { get; set; }
+        
+        [Required]
+        public int Minor { get; set; }
+        
+        [Required]
+        public int Patch { get; set; }
+
+        [StringLength(32)]
+        [Required][Key]
+        public string FullString { get; set; }
+        public bool IsPrerelease { get; set; }
+
+        public virtual Package Package { get; set; }
+
+
+    }
+}