ready for database

Apollon.Domain/Commands/ICreateTournamentCommand.cs

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+using Apollon.Domain.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Apollon.Domain.Commands
+{
+    public interface ICreateTournamentCommand
+    {
+        Task Execute(Tournament tournament);
+    }
+}

Apollon.Domain/Commands/IDeleteTournamentCommand .cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Apollon.Domain.Commands
+{
+    public interface IDeleteTournamentCommand
+    {
+        Task Execute (Guid id);
+    }
+}

Apollon.Domain/Commands/IUpdateTournamentCommand .cs

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+using Apollon.Domain.Models;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Apollon.Domain.Commands
+{
+    public interface IUpdateTournamentCommand
+    {
+        Task Execute(Tournament tournament);
+    }
+}