diff --git a/Back/skydiveLogs-api.DomainService/Repositories/IStatsRepository.cs b/Back/skydiveLogs-api.DomainService/Repositories/IStatsRepository.cs
index 0430fc7..b9c205e 100644
--- a/Back/skydiveLogs-api.DomainService/Repositories/IStatsRepository.cs
+++ b/Back/skydiveLogs-api.DomainService/Repositories/IStatsRepository.cs
@@ -1,13 +1,18 @@
 using skydiveLogs_api.Domain;
+using System.Collections.Generic;
 
 namespace skydiveLogs_api.DomainService.Repositories
 {
-    public interface IStatsRepository<T> : IRepository<T>
+    public interface IStatsRepository<T>
     {
         #region Public Methods
 
         T GetAll(User user);
 
+        int Add(T newEntity);
+
+        bool Update(T updated);
+
         #endregion Public Methods
     }
 }
\ No newline at end of file
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByAircraftRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByAircraftRepository.cs
index 4ef0320..63eb76c 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByAircraftRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByAircraftRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByAircraft> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByAircraft GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByAircraft GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByAircraft stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByDzRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByDzRepository.cs
index afa293f..784bc6d 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByDzRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByDzRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByDz> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByDz GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByDz GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByDz stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByGearRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByGearRepository.cs
index 6829e2f..b7a2476 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByGearRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByGearRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByGear> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByGear GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByGear GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByGear stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByJumpTypeRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByJumpTypeRepository.cs
index e584793..1cfa71c 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByJumpTypeRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByJumpTypeRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByJumpType> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByJumpType GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByJumpType GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByJumpType stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByYearByJumpTypeRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByYearByJumpTypeRepository.cs
index 1e1e634..b76daa9 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByYearByJumpTypeRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByYearByJumpTypeRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByYearByJumpType> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByYearByJumpType GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByYearByJumpType GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByYearByJumpType stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsByYearRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsByYearRepository.cs
index 4021fc8..b743c77 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsByYearRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsByYearRepository.cs
@@ -2,7 +2,6 @@ using LiteDB;
 using skydiveLogs_api.Domain;
 using skydiveLogs_api.DomainService.Repositories;
 using skydiveLogs_api.Infrastructure.Interfaces;
-using System.Collections.Generic;
 
 namespace skydiveLogs_api.Infrastructure
 {
@@ -37,11 +36,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsByYear> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsByYear GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +44,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsByYear GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsByYear stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByDzRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByDzRepository.cs
index 1968380..ae6ad9b 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByDzRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByDzRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsForLastMonthByDz> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsForLastMonthByDz GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsForLastMonthByDz GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsForLastMonthByDz stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByJumpTypeRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByJumpTypeRepository.cs
index fa7e46f..90d6dd4 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByJumpTypeRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsForLastMonthByJumpTypeRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsForLastMonthByJumpType> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsForLastMonthByJumpType GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsForLastMonthByJumpType GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsForLastMonthByJumpType stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByDzRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByDzRepository.cs
index 7aa8f7c..14e8814 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByDzRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByDzRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsForLastYearByDz> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsForLastYearByDz GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsForLastYearByDz GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsForLastYearByDz stats)
         {
             return _col.Update(stats);
diff --git a/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByJumpTypeRepository.cs b/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByJumpTypeRepository.cs
index 512eb8e..c532267 100644
--- a/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByJumpTypeRepository.cs
+++ b/Back/skydiveLogs-api.Infrastructure/StatsForLastYearByJumpTypeRepository.cs
@@ -37,11 +37,6 @@ namespace skydiveLogs_api.Infrastructure
             return result;
         }
 
-        public IEnumerable<StatsForLastYearByJumpType> GetAll()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public StatsForLastYearByJumpType GetAll(User user)
         {
             return _col.Include(x => x.User)
@@ -50,16 +45,6 @@ namespace skydiveLogs_api.Infrastructure
                        .SingleOrDefault();
         }
 
-        public StatsForLastYearByJumpType GetById(int id)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public int GetCount()
-        {
-            throw new System.NotImplementedException();
-        }
-
         public bool Update(StatsForLastYearByJumpType stats)
         {
             return _col.Update(stats);