diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
index cffe1de..8cf0ea0 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
@@ -1,17 +1,82 @@
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Interfaces
+namespace Interfaces
 {
     public interface IRepository
     {
+        /// <summary>
+        /// Get a list of Users
+        /// </summary>
+        /// <returns>
+        /// Returns <see cref="UserList"/> with full list of users,
+        /// plus a total user count. Pagination options are supported.
+        /// </returns>
         UserList GetUsers();
+        /// <summary>
+        /// Get details about a single user in the system base on their Id
+        /// </summary>
+        /// <param name="id">
+        /// integer data type, the Id of the User to get details about.</param>
+        /// <returns>
+        /// <see cref="User"/> object with full details, 
+        /// including full <see cref="Identifier"/>
+        /// </returns>
         User GetUser(int id);
+        /// <summary>
+        /// Get a list of the timelogs available for the specified user
+        /// for the current Calendar Week
+        /// </summary>
+        /// <param name="userId">
+        /// integer data type, the Id of the user to get time logs for
+        /// </param>
+        /// <returns>
+        /// <see cref="TimeLogList"/> with nested <see cref="TimeLog"/> objects
+        /// for the current calendar week
+        /// </returns>
         TimeLogList GetTimeLogs(int userId);
+        /// <summary>
+        /// Get a list of the timelogs available for the specified user
+        /// for the specified calendar week
+        /// </summary>
+        /// <param name="userId">
+        /// integer data type, the Id of the user to get time logs for
+        /// </param>
+        /// <param name="calendarWeek">
+        /// integer data type, the calendar week to retrieve logs for.
+        /// </param>
+        /// <returns>
+        /// <see cref="TimeLogList"/> with nested <see cref="TimeLog"/> objects
+        /// for the current calendar week
+        /// </returns>
         TimeLogList GetTimeLogs(int userId, int calendarWeek);
-        IdentifierList GetUnassignedList();
+        /// <summary>
+        /// Get a full list of Identifiers which are not associated to a user.
+        /// </summary>
+        /// <returns>
+        /// <see cref="IdentifierList"/> with nested <see cref="Identifier"/> list
+        /// </returns>
+        IdentifierList GetUnassignedIdentifierList();
+        /// <summary>
+        /// Update a user in the system with the new values.
+        /// </summary>
+        /// <remarks>
+        /// If the user object passed does not exist, it will be created.
+        /// </remarks>
+        /// <param name="user">
+        /// <see cref="User"/> object detailing the new properties to assign to the user.
+        /// The Id Field should not be changed, or should be -1 for new users.
+        /// </param>
+        /// <returns>
+        /// <see cref="OperationResponse"/> to indicate procedure status.
+        /// </returns>
         OperationResponse UpdateUser(User user);
+        /// <summary>
+        /// Create a new TimeLog Event in the repository.
+        /// </summary>
+        /// <param name="identifier">
+        /// <see cref="Identifier"/> object with the Unique Id triggering the event
+        /// </param>
+        /// <returns>
+        /// <see cref="OperationResponse"/> to indicate procedure status.
+        /// </returns>
         OperationResponse LogEventTime(Identifier identifier);
     }
 }
diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/Identifier.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/Identifier.cs
index 1c3b7a6..52766ff 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/Identifier.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/Identifier.cs
@@ -5,5 +5,20 @@
         public int Id { get; set; }
         public string UniqueId { get; set; }
         public bool IsAssociatedToUser { get; set; }
+
+        public override bool Equals(object obj)
+        {
+            var identObj = obj as Identifier;
+            if (identObj == null) return false;
+
+            return identObj.Id == Id
+                   && identObj.IsAssociatedToUser == IsAssociatedToUser
+                   && identObj.UniqueId == UniqueId;
+        }
+
+        public override int GetHashCode()
+        {
+            return Id.GetHashCode() ^ UniqueId.GetHashCode() ^ IsAssociatedToUser.GetHashCode();
+        }
     }
 }
\ No newline at end of file
diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/OperationResponse.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/OperationResponse.cs
index 3851a5c..08df027 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/OperationResponse.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/OperationResponse.cs
@@ -4,8 +4,8 @@
     {
         NONE = 0,
         SUCCESS = 1,
-        CREATED = 2,
-        UPDATED = 3,
+        UPDATED = 2,
+        CREATED = 3,
         DELETED = 4,
         FAILED = 5
     }
diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/User.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/User.cs
index e232428..0b74df6 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/User.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/User.cs
@@ -11,8 +11,13 @@ namespace Interfaces
         public int UserId { get; set; }
         public string FirstName { get; set; }
         public string LastName { get; set; }
-        public int HoursPerWeek { get; set; }
-        public int AssociatedIdentifierCount { get; set; }
+        public float HoursPerWeek { get; set; }
+
+        public int AssociatedIdentifierCount
+        {
+            get { return AssociatedIdentifiers.Count; }
+        }
+
         public List<Identifier> AssociatedIdentifiers { get; set; }
     }
 }
\ No newline at end of file
diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/UserList.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/UserList.cs
index 18e57ee..303d7d3 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/UserList.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/UserList.cs
@@ -4,7 +4,11 @@ namespace Interfaces
 {
     public class UserList
     {
-        public int UserCount { get; set; }
+        public UserList()
+        {
+            Users = new List<User>();
+        }
+        public int UserCount { get { return Users.Count; } }
         public List<User> Users { get; set; }
         public int PageSize { get; set; }
         public int PageNumber { get; set; }