diff --git a/Back/skydiveLogs-api.Data/AircraftRepository.cs b/Back/skydiveLogs-api.Data/AircraftRepository.cs
index cfb27ca..22df8ef 100644
--- a/Back/skydiveLogs-api.Data/AircraftRepository.cs
+++ b/Back/skydiveLogs-api.Data/AircraftRepository.cs
@@ -14,7 +14,7 @@ namespace skydiveLogs_api.Data
         public AircraftRepository(IDataProvider dataProvider)
         {
             _dataProvider = dataProvider;
-            _col = _dataProvider.GetCollection<Aircraft>();
+            _col = _dataProvider.CollOfAircraft;
         }
 
         public IEnumerable<Aircraft> GetAll()
diff --git a/Back/skydiveLogs-api.Data/DropZoneRepository.cs b/Back/skydiveLogs-api.Data/DropZoneRepository.cs
index 23f77e6..a8b6c43 100644
--- a/Back/skydiveLogs-api.Data/DropZoneRepository.cs
+++ b/Back/skydiveLogs-api.Data/DropZoneRepository.cs
@@ -14,17 +14,23 @@ namespace skydiveLogs_api.Data
         public DropZoneRepository(IDataProvider dataProvider)
         {
             _dataProvider = dataProvider;
-            _col = _dataProvider.GetCollection<DropZone>();
+            _col = _dataProvider.CollOfDropZone;
         }
 
         public IEnumerable<DropZone> GetAll()
         {
-            return _col.FindAll().ToList();
+            var results = _col.FindAll().ToList();
+            _dataProvider.Close();
+
+            return results;
         }
 
         public DropZone GetById(int id)
         {
-            return _col.FindById(new BsonValue(id)); ;
+            var result = _col.FindById(new BsonValue(id));
+            _dataProvider.Close();
+
+            return result;
         }
 
         private readonly IDataProvider _dataProvider;
diff --git a/Back/skydiveLogs-api.Data/Interface/IDataProvider.cs b/Back/skydiveLogs-api.Data/Interface/IDataProvider.cs
index b304134..a55ea2c 100644
--- a/Back/skydiveLogs-api.Data/Interface/IDataProvider.cs
+++ b/Back/skydiveLogs-api.Data/Interface/IDataProvider.cs
@@ -1,5 +1,7 @@
 using LiteDB;
 
+using skydiveLogs_api.Model;
+
 
 namespace skydiveLogs_api.Data.Interface
 {
@@ -8,5 +10,15 @@ namespace skydiveLogs_api.Data.Interface
         LiteCollection<T> GetCollection<T>();
 
         void Close();
+
+        LiteCollection<Aircraft> CollOfAircraft { get; }
+
+        LiteCollection<DropZone> CollOfDropZone { get; }
+
+        LiteCollection<Gear> CollOfGear { get; }
+
+        LiteCollection<JumpType> CollOfJumpType { get; }
+
+        LiteCollection<Jump> CollOfJump { get; }
     }
 }
diff --git a/Back/skydiveLogs-api.Data/LiteDbProvider.cs b/Back/skydiveLogs-api.Data/LiteDbProvider.cs
index e04f36a..bf41e31 100644
--- a/Back/skydiveLogs-api.Data/LiteDbProvider.cs
+++ b/Back/skydiveLogs-api.Data/LiteDbProvider.cs
@@ -1,7 +1,7 @@
 using LiteDB;
 
 using skydiveLogs_api.Data.Interface;
-
+using skydiveLogs_api.Model;
 
 namespace skydiveLogs_api.Data
 {
@@ -23,5 +23,15 @@ namespace skydiveLogs_api.Data
         }
 
         private readonly LiteDatabase _db;
+
+        public LiteCollection<Aircraft> CollOfAircraft => _db.GetCollection<Aircraft>();
+
+        public LiteCollection<DropZone> CollOfDropZone => _db.GetCollection<DropZone>();
+
+        public LiteCollection<Gear> CollOfGear => _db.GetCollection<Gear>();
+
+        public LiteCollection<JumpType> CollOfJumpType => _db.GetCollection<JumpType>();
+
+        public LiteCollection<Jump> CollOfJump => _db.GetCollection<Jump>();
     }
 }