diff --git a/SzCli/Program.cs b/SzCli/Program.cs
index 56a6eab..c4ebb9a 100644
--- a/SzCli/Program.cs
+++ b/SzCli/Program.cs
@@ -14,12 +14,245 @@ public class Program
     {
         SZ.Init(_fileManager, _logger);
 
-        Test.CreateTestData();
+        bool shouldClose = false;
 
-        var dataset = SZ.SzDataHandler.LoadDataset("test-dataset");
-        var dataTemplate = SZ.SzDataHandler.LoadTemplate<SzDataObjectTemplate>("szcore-item-basic");
+        while (!shouldClose)
+        {
+            Console.WriteLine(" -- SZ CLI MAIN MENU -- ");
+            Console.WriteLine("0: Exit");
+            Console.WriteLine("1: Create Template");
+            Console.WriteLine("2: Create Dataset");
+            Console.WriteLine("3: Evaluate Dataset");
+            Console.WriteLine("4: Delete Template");
+            Console.WriteLine("5: Delete Dataset");
+            // Console.WriteLine("6: Fetch Template");
+            // Console.WriteLine("7: Fetch Dataset");
+            
+            Console.Write("> ");
+            var userInput = Console.ReadLine();
+            if (!int.TryParse(userInput, out var result))
+            {
+                Console.WriteLine($"Input was not a number, please try again.\n\n");
+                continue;
+            }
 
-        var evalResult = SZ.SzEvaluator.EvaluateDataObject(dataset.DataObjects["test"], dataTemplate);
-        _logger.Log($"Evaluation test -- Pass?: {evalResult.Pass} {(evalResult.Errors == "" ? "" : (" - Errors: " + evalResult.Errors))}");
+            switch (result)
+            {
+                case 0:
+                    shouldClose = true;
+                    break;
+                case 1: 
+                    CreateTemplate();
+                    break;
+                case 2:
+                    CreateDataset();
+                    break;
+                case 3:
+                    EvaluateDataset();
+                    break;
+                case 4:
+                    DeleteTemplate();
+                    break;
+                case 5:
+                    DeleteDataset();
+                    break;
+                default:
+                    Console.WriteLine("Invalid input, please try again");
+                    break;
+            }
+        }
+
+        Console.WriteLine("\n\n");
+    }
+
+    private static void DeleteDataset()
+    {
+        Console.Write("Dataset ID: ");
+        var userInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(userInput))
+        {
+            Console.WriteLine("Id was null");
+            return;
+        }
+        SZ.SzDataHandler.DeleteDataset(userInput);
+    }
+
+    private static void DeleteTemplate()
+    {
+        Console.Write("Template ID: ");
+        var userInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(userInput))
+        {
+            Console.WriteLine("Id was null");
+            return;
+        }
+        SZ.SzDataHandler.DeleteTemplate(userInput);
+    }
+
+    private static void EvaluateDataset()
+    {
+        Console.Write("Dataset ID: ");
+        var userInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(userInput))
+        {
+            Console.WriteLine("Id was null");
+            return;
+        }
+        var dataset = SZ.SzDataHandler.LoadDataset(userInput);
+        if (dataset is null)
+        {
+            Console.WriteLine($"Dataset with ID {userInput} could not be loaded");
+            return;
+        }
+        
+        var evalResult = SZ.SzEvaluator.EvaluateDataset(dataset);
+    }
+
+    private static void CreateDataset()
+    {
+        Console.Write("Enter a name for the dataset: ");
+        var nameInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(nameInput))
+        {
+            Console.WriteLine("Dataset name can't be blank");
+            return;
+        }
+
+        var id = nameInput.ToLower().Replace(" ", "-").Trim();
+
+        Console.Write("Enter template ID: ");
+        var templateIdInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(templateIdInput))
+        {
+            Console.WriteLine("Template ID can't be blank");
+            return;
+        }
+
+        var template = SZ.SzDataHandler.LoadTemplate<SzDataObjectTemplate>(templateIdInput);
+        if (template is null)
+        {
+            Console.WriteLine($"Could not load template with ID {templateIdInput}");
+            return;
+        }
+
+        
+
+
+    }
+
+    private static void CreateTemplate()
+    {
+        Console.Write("Enter a name for the template: ");
+        var nameInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(nameInput))
+        {
+            Console.WriteLine("Template name can't be blank");
+            return;
+        }
+
+        var id = nameInput.ToLower().Replace(" ", "-").Trim();
+
+        Console.Write("Enter a data type for the template: ");
+        var dataTypeInput = Console.ReadLine();
+        if (string.IsNullOrEmpty(dataTypeInput))
+        {
+            Console.WriteLine("Template Data Type can't be blank");
+            return;
+        }
+
+        Console.Write("Enter a description for the template: ");
+        var descInput = Console.ReadLine();
+
+        var fields = CreateTemplateFields();
+
+        var newTemplate = new SzDataObjectTemplate()
+        {
+            Name = nameInput,
+            Id = id,
+            DataObjectType = dataTypeInput,
+            Description = descInput ?? "",
+        };
+
+        foreach (var f in fields)
+        {
+            newTemplate.TemplateFields.Add(f.Id, f);
+        }
+
+        SZ.SzDataHandler.SaveTemplate(newTemplate);
+
+    }
+
+    private static List<SzTemplateField> CreateTemplateFields()
+    {
+        bool done = false;
+        int i = 0;
+        List<SzTemplateField> list = [];
+        while (!done)
+        {
+            i++;
+            Console.Write($"Field {i} ID: ");
+            var idInput = Console.ReadLine();
+            if (string.IsNullOrEmpty(idInput))
+            {
+                Console.WriteLine("Field id can't be blank");
+                i--;
+                continue;
+            }
+
+            if (list.Any(f => f.Id == idInput))
+            {
+                Console.WriteLine($"Field id '{idInput}' must be unique");
+                i--;
+                continue;
+            }
+
+            Console.WriteLine($"Field {idInput} type: ");
+            int enumIter = 0;
+            foreach (var enumType in Enum.GetValues<SzFieldType>())
+            {
+                Console.WriteLine($"- {enumType}");
+                enumIter++;
+            }
+            Console.Write("> ");
+            var typeInput = Console.ReadLine();
+            if (!Enum.TryParse<SzFieldType>(typeInput, out var typeEnumResult))
+            {
+                Console.WriteLine("Field type input was invalid");
+                i--;
+                continue;
+            }
+
+            // Console.Write("Is the field a list?: ");
+            // var isListInput = Console.ReadLine();
+            // if (!bool.TryParse(isListInput, out var isListResult))
+            // {
+            //     Console.WriteLine("Field isList input was invalid");
+            //     i--;
+            //     continue;
+            // }
+
+            Console.Write("Add another field? ");
+            var contInput = Console.ReadLine();
+            switch (contInput)
+            {
+                case "n":
+                case "N":
+                default:
+                    done = true;
+                    break;
+                case "y":
+                case "Y":
+                    break;
+            }
+
+            var newField = new SzTemplateField(){
+                Id = idInput,
+                FieldType = typeEnumResult
+            };
+
+            list.Add(newField);
+        }
+
+        return list;
     }
 }
diff --git a/SzCore/Defaults/DefaultDatabaseHandler.cs b/SzCore/Defaults/DefaultDatabaseHandler.cs
new file mode 100644
index 0000000..1dfac19
--- /dev/null
+++ b/SzCore/Defaults/DefaultDatabaseHandler.cs
@@ -0,0 +1,33 @@
+using SzCore.DataObjects;
+
+namespace SzCore.Defaults;
+
+public class DefaultDatabaseHandler : ISzDatabaseHandler
+{
+    public bool InternetAllowed { get; set; } = true;
+    public Dictionary<string, string> SzDbUrls { get; set; } = [];
+
+    public SzDataset? TryRetrieveDataset(Guid uuid)
+    {
+        SZ.Logger.LogWarning("The default database helper is not implemented yet");
+        return null;
+    }
+
+    public Task<SzDataset?> TryRetrieveDatasetAsync(Guid uuid)
+    {
+        SZ.Logger.LogWarning("The default database helper is not implemented yet");
+        return null;
+    }
+
+    public ISzTemplate? TryRetrieveTemplate(Guid uuid)
+    {
+        SZ.Logger.LogWarning("The default database helper is not implemented yet");
+        return null;
+    }
+
+    public Task<ISzTemplate?> TryRetrieveTemplateAsync(Guid uuid)
+    {
+        SZ.Logger.LogWarning("The default database helper is not implemented yet");
+        return null;
+    }
+}
\ No newline at end of file
diff --git a/SzCore/Defaults/DefaultLocalFileManager.cs b/SzCore/Defaults/DefaultLocalFileManager.cs
index e4459be..ffa103b 100644
--- a/SzCore/Defaults/DefaultLocalFileManager.cs
+++ b/SzCore/Defaults/DefaultLocalFileManager.cs
@@ -43,4 +43,18 @@ public class DefaultLocalFileManager : ISzFileManager
             return null; 
         }
     }
+
+    public bool DeleteFile(string path)
+    {
+        try
+        {
+            File.Delete(path);
+            return true;
+        }
+        catch (Exception e)
+        {
+            SZ.Logger.LogError("LocalFileManager: Could not delete file. " + e.Message);
+            return false;
+        }
+    }
 }
\ No newline at end of file
diff --git a/SzCore/ISzDatabaseHandler.cs b/SzCore/ISzDatabaseHandler.cs
index 235e141..7e52f70 100644
--- a/SzCore/ISzDatabaseHandler.cs
+++ b/SzCore/ISzDatabaseHandler.cs
@@ -1,6 +1,15 @@
+using SzCore.DataObjects;
+
 namespace SzCore;
 
 public interface ISzDatabaseHandler
 {
+    public bool InternetAllowed { get; set; }
+    public Dictionary<string, string> SzDbUrls { get; set; }
+
+    public Task<SzDataset?> TryRetrieveDatasetAsync(Guid uuid);
+    public Task<ISzTemplate?> TryRetrieveTemplateAsync(Guid uuid);
     
+    public SzDataset? TryRetrieveDataset(Guid uuid);
+    public ISzTemplate? TryRetrieveTemplate(Guid uuid);
 }
\ No newline at end of file
diff --git a/SzCore/ISzFileManager.cs b/SzCore/ISzFileManager.cs
index bdba2af..9e631c5 100644
--- a/SzCore/ISzFileManager.cs
+++ b/SzCore/ISzFileManager.cs
@@ -1,3 +1,4 @@
+using System.Security.Cryptography.X509Certificates;
 using SzCore.DataObjects;
 
 namespace SzCore;
@@ -10,4 +11,5 @@ public interface ISzFileManager
     
     public bool SaveFile(string path, string fileContent);
     public string? LoadFile(string path);
+    public bool DeleteFile(string path);
 }
diff --git a/SzCore/SZ.cs b/SzCore/SZ.cs
index 80f268d..4ffae83 100644
--- a/SzCore/SZ.cs
+++ b/SzCore/SZ.cs
@@ -6,6 +6,7 @@ public static class SZ
 {
     private static ISzFileManager? _fileManager;
     private static ISzLogger? _logger;
+    private static ISzDatabaseHandler? _dbHandler;
 
     public static bool IsInitalized { get; private set; } = false;
 
@@ -33,6 +34,16 @@ public static class SZ
         }
     }
 
+    public static ISzDatabaseHandler DatabaseHandler
+    {
+        get
+        {
+            CheckInitialization();
+            if (_dbHandler is null) throw new Exception("SZ._dbHandler is null");
+            return _dbHandler;
+        }
+    }
+
     private static readonly Dictionary<Type, object> _services = [];
     private static readonly List<Type> _protectedServices = [];
 
@@ -42,12 +53,13 @@ public static class SZ
     /// <param name="fileManager">An ISzFileManager instance.</param>
     /// <param name="logger">An ISzLogger instance.</param>
     /// /// <exception cref="Exception">Throws if SZ has already been initalized</exception>
-    public static void Init(ISzFileManager fileManager, ISzLogger logger) 
+    public static void Init(ISzFileManager fileManager, ISzLogger logger, ISzDatabaseHandler databaseHandler) 
     {
         if (IsInitalized) throw new Exception("Cannot initalize SZ more than once.");
 
         _logger = logger;
         _fileManager = fileManager;
+        _dbHandler = databaseHandler;
 
         if (_logger is null)
         {
@@ -59,10 +71,16 @@ public static class SZ
             throw new Exception("SZ.Init failed: LocalFileManager was null");
         }
 
+        if (_dbHandler is null)
+        {
+            throw new Exception("SZ.Init failed: DatabaseHandler was null");
+        }
+
         IsInitalized = true;
 
         AddService(fileManager, true);
         AddService(logger, true);
+        AddService(databaseHandler, true);
 
         logger.Log(" -- SZ CORE INITALIZED -- ");
     }
diff --git a/SzCore/SzDataHandler.cs b/SzCore/SzDataHandler.cs
index 43977e2..8fc3533 100644
--- a/SzCore/SzDataHandler.cs
+++ b/SzCore/SzDataHandler.cs
@@ -10,6 +10,14 @@ public class SzDataHandler
 
     public SzDataHandler(){}
 
+    // The client should periodically call this to free memory, probably
+    private void ClearCache()
+    {
+        _loadedDatasets.Clear();
+        _loadedTemplates.Clear();
+    }
+
+    #region Datasets
     public bool SaveDataset(SzDataset dataset)
     {
         var datasetPath = Path.Combine(SZ.LocalFileManager.DatasetsPath, dataset.Id, "dataset.json");
@@ -24,6 +32,20 @@ public class SzDataHandler
         }
     }
 
+    public bool DeleteDataset(string datasetId)
+    {
+        try
+        {
+            Directory.Delete(Path.Combine(SZ.LocalFileManager.DatasetsPath, datasetId), true);
+            return true;
+        }
+        catch (Exception e)
+        {
+            SZ.Logger.LogError($"Could not delete Dataset with id '{datasetId}': {e.Message}");
+            return false;
+        }
+    }
+
     public SzDataset? LoadDataset(string datasetId)
     {
         if (_loadedDatasets.TryGetValue(datasetId, out SzDataset? value))
@@ -51,6 +73,14 @@ public class SzDataHandler
         return parsedDataset;
     }
 
+    public SzDataset CreateDataset()
+    {
+
+    }
+
+    #endregion
+
+    #region Templates
     public bool SaveTemplate(ISzTemplate template)
     {
         var templatePath = Path.Combine(SZ.LocalFileManager.TemplatesPath, template.Id, "template.json");
@@ -65,6 +95,20 @@ public class SzDataHandler
         }
     }
 
+    public bool DeleteTemplate(string templateId)
+    {
+        try
+        {
+            Directory.Delete(Path.Combine(SZ.LocalFileManager.TemplatesPath, templateId), true);
+            return true;
+        }
+        catch (Exception e)
+        {
+            SZ.Logger.LogError($"Could not delete Template with id '{templateId}': {e.Message}");
+            return false;
+        }
+    }
+
     public T? LoadTemplate<T>(string templateId) where T : ISzTemplate
     {
         if (_loadedTemplates.TryGetValue(templateId, out ISzTemplate? existing))
@@ -93,13 +137,49 @@ public class SzDataHandler
         return parsedTemplate;
     }
 
-    // The client should periodically call this to free memory, probably
-    private void ClearCache()
+    public SzDataObjectTemplate? CreateDataObjectTemplate(string name, string dataObjectType, string? id = null, string? description = null, List<SzTemplateField>? fields = null)
     {
-        _loadedDatasets.Clear();
-        _loadedTemplates.Clear();
-    }
+        if (string.IsNullOrEmpty(name) || string.IsNullOrEmpty(dataObjectType)) return null;
 
+        string newId;
+        if (!string.IsNullOrEmpty(id))
+        {
+            newId = id;
+        }
+        else 
+        {
+            newId = name.ToLower().Replace(" ", "-").Trim();
+        }
+
+        var newTemplate = new SzDataObjectTemplate()
+        {
+            Name = name,
+            Id = newId,
+            DataObjectType = dataObjectType,
+            Uuid = Guid.NewGuid(),
+            Description = description ?? ""
+        };
+
+        if (fields is not null)
+        {
+            foreach (var field in fields)
+            {
+                newTemplate.TemplateFields.Add(field.Id, field);    
+            }
+        }
+
+        return newTemplate;
+
+    }
+    #endregion
+
+    #region Other
+
+    public Sz
+
+    #endregion
+
+    #region Tests
     // Only use these two methods for test purposes, we probably don't want to load all datasets and templates to memory in production
     private void LoadAllDatasets()
     {
@@ -154,4 +234,5 @@ public class SzDataHandler
             _loadedTemplates.Add(parsedTemplate.Id, parsedTemplate);
         }
     }
+    #endregion
 }
\ No newline at end of file
diff --git a/SzCore/SzEvaluator.cs b/SzCore/SzEvaluator.cs
index e8a5c7d..290f878 100644
--- a/SzCore/SzEvaluator.cs
+++ b/SzCore/SzEvaluator.cs
@@ -6,9 +6,29 @@ namespace SzCore;
 
 public class SzEvaluator
 {
-    public SzEvaluationResult EvaluateDataObject(SzDataObject dataObject, SzDataObjectTemplate template)
+
+    public SzOperationResult EvaluateDataset(SzDataset dataset)
     {
-        if (dataObject is null || template is null) return new SzEvaluationResult(false, "dataObject or template is null");
+        if (dataset is null) return new SzOperationResult(false, "Dataset cannot be null");
+
+        var errors = new StringBuilder();
+
+        var template = SZ.SzDataHandler.LoadTemplate<SzDataObjectTemplate>(dataset.DataObjectTemplateId);
+        if (template is null) return new SzOperationResult(false, $"Template with id {dataset.DataObjectTemplateId} for Dataset ID {dataset.Id} could not be loaded");
+
+        foreach (var dataObject in dataset.DataObjects.Values)
+        {
+            var evalResult = EvaluateDataObject(dataObject, template);
+            if (!evalResult.Pass) errors.Append(evalResult.Errors);
+        }
+
+        var errString = errors.ToString();
+        return new SzOperationResult(string.IsNullOrEmpty(errString), errString);
+    }
+
+    public SzOperationResult EvaluateDataObject(SzDataObject dataObject, SzDataObjectTemplate template)
+    {
+        if (dataObject is null || template is null) return new SzOperationResult(false, "dataObject or template is null");
 
         var errors = new StringBuilder();
 
@@ -36,10 +56,10 @@ public class SzEvaluator
         }
 
         var errString = errors.ToString().Trim();
-        return new SzEvaluationResult(string.IsNullOrEmpty(errString), string.IsNullOrEmpty(errString) ? "" : errString);
+        return new SzOperationResult(string.IsNullOrEmpty(errString), string.IsNullOrEmpty(errString) ? "" : errString);
     }
 
-    public SzEvaluationResult DoesFieldMatchTemplateField(SzField field, SzTemplateField templateField)
+    public SzOperationResult DoesFieldMatchTemplateField(SzField field, SzTemplateField templateField)
     {
         var errors = new StringBuilder();
 
@@ -48,13 +68,13 @@ public class SzEvaluator
         if (field.IsList != templateField.IsList) errors.AppendLine($"Field '{field.Id}' IsList mismatch: Expected {templateField.IsList}");
 
         var errString = errors.ToString().Trim();
-        return new SzEvaluationResult(string.IsNullOrEmpty(errString), errString);
+        return new SzOperationResult(string.IsNullOrEmpty(errString), errString);
     }
 
-    public SzEvaluationResult EvaluateFieldValue(SzField field)
+    public SzOperationResult EvaluateFieldValue(SzField field)
     {
         if (string.IsNullOrWhiteSpace(field.Value)) 
-            return new SzEvaluationResult(true, "");
+            return new SzOperationResult(true, "");
 
         var errors = new StringBuilder(); 
 
@@ -91,12 +111,6 @@ public class SzEvaluator
         }
 
         var errString = errors.ToString().Trim();
-        return new SzEvaluationResult(string.IsNullOrEmpty(errString), errString);
+        return new SzOperationResult(string.IsNullOrEmpty(errString), errString);
     }
 } 
-
-public class SzEvaluationResult(bool pass, string errors = "None")
-{
-    public bool Pass = pass;
-    public string Errors = errors;
-}
diff --git a/SzCore/SzOperationResult.cs b/SzCore/SzOperationResult.cs
new file mode 100644
index 0000000..1ec10a2
--- /dev/null
+++ b/SzCore/SzOperationResult.cs
@@ -0,0 +1,7 @@
+namespace SzCore;
+
+public class SzOperationResult(bool pass, string errors = "None")
+{
+    public bool Pass = pass;
+    public string Errors = errors;
+}