Add software version.

Marechai.Database/Models/SoftwareVersion.cs

@@ -0,0 +1,47 @@
+/******************************************************************************
+// MARECHAI: Master repository of computing history artifacts information
+// ----------------------------------------------------------------------------
+//
+// Author(s)      : Natalia Portillo <claunia@claunia.com>
+//
+// --[ License ] --------------------------------------------------------------
+//
+//     This program is free software: you can redistribute it and/or modify
+//     it under the terms of the GNU General Public License as
+//     published by the Free Software Foundation, either version 3 of the
+//     License, or (at your option) any later version.
+//
+//     This program is distributed in the hope that it will be useful,
+//     but WITHOUT ANY WARRANTY; without even the implied warranty of
+//     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//     GNU General Public License for more details.
+//
+//     You should have received a copy of the GNU General Public License
+//     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+// ----------------------------------------------------------------------------
+// Copyright © 2003-2020 Natalia Portillo
+*******************************************************************************/
+
+using System;
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Marechai.Database.Models
+{
+    public class SoftwareVersion : BaseModel<ulong>
+    {
+        [Required]
+        public virtual SoftwareFamily Family { get; set; }
+        public string Name     { get;               set; }
+        public string Codename { get;               set; }
+        [Required]
+        public string Version { get;                                             set; }
+        public         DateTime?                               Introduced { get; set; }
+        public virtual License                                 License    { get; set; }
+        public virtual SoftwareVersion                         Previous   { get; set; }
+        public virtual SoftwareVersion                         Next       { get; set; }
+        public virtual ICollection<CompaniesBySoftwareVersion> Companies  { get; set; }
+        public virtual ICollection<PeopleBySoftwareVersion>    People     { get; set; }
+    }
+}