diff --git a/OSI-API/Business/DAO/DAOBase.cs b/OSI-API/Business/DAO/DAOBase.cs
new file mode 100644
index 0000000..913b214
--- /dev/null
+++ b/OSI-API/Business/DAO/DAOBase.cs
@@ -0,0 +1,26 @@
+using System;
+using System.Collections.Generic;
+using OSI.API.Business.Database;
+using OSI.API.Business.Objects;
+
+namespace OSI.API.Business.DAO
+{
+
+    public abstract class DAOBase<T> : MySQL
+    {
+        protected DAOBase(DBConnectionInformation connectionInformation) : base(connectionInformation)
+        {
+        }
+
+        protected DAOBase(string server, string database, string username, string password) : base(server, database, username, password)
+        {
+        }
+
+        public abstract List<T> GetAll();
+        public abstract T Get(int id);
+        public abstract void Create(T itemToCreate);
+        public abstract void Update(T itemToUpdate);
+        public abstract void Delete(int id);
+    }
+
+}
\ No newline at end of file
diff --git a/OSI-API/Business/DAO/InvoiceDAO.cs b/OSI-API/Business/DAO/InvoiceDAO.cs
new file mode 100644
index 0000000..c1d57f2
--- /dev/null
+++ b/OSI-API/Business/DAO/InvoiceDAO.cs
@@ -0,0 +1,45 @@
+using System;
+using System.Collections.Generic;
+using OSI.API.Business.Database;
+using OSI.API.Business.Objects;
+
+namespace OSI.API.Business.DAO
+{
+
+    public class InvoiceDAO : DAOBase<InvoiceObject>
+    {
+        public InvoiceDAO(DBConnectionInformation connectionInformation) : base(connectionInformation)
+        {
+        }
+
+        public InvoiceDAO(string server, string database, string username, string password) : base(server, database, username, password)
+        {
+        }
+
+        public override void Create(InvoiceObject itemToCreate)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Delete(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override InvoiceObject Get(int id)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override List<InvoiceObject> GetAll()
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void Update(InvoiceObject itemToUpdate)
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+}
\ No newline at end of file
diff --git a/OSI-API/Business/Database/MySQL/MySQL.cs b/OSI-API/Business/Database/MySQL/MySQL.cs
index ecd1e8d..665b9b9 100644
--- a/OSI-API/Business/Database/MySQL/MySQL.cs
+++ b/OSI-API/Business/Database/MySQL/MySQL.cs
@@ -89,20 +89,7 @@ namespace OSI.API.Business.Database
 
             if (!DBReader.IsDBNull(columnID))
             {
-                const int CHUNK_SIZE = 2 * 1024;
-                byte[] buffer = new byte[CHUNK_SIZE];
-                long bytesRead;
-                long fieldOffset = 0;
-
-                using (var stream = new MemoryStream())
-                {
-                    while ((bytesRead = DBReader.GetBytes(columnID, fieldOffset, buffer, 0, buffer.Length)) == buffer.Length)
-                    {
-                        stream.Write(buffer, 0, (int)bytesRead);
-                        fieldOffset += bytesRead;
-                    }
-                    rv = stream.ToArray();
-                }
+                rv = (byte[])DBReader[columnID];
             }
 
             return rv;
diff --git a/OSI-API/Controllers/InvoicesController.cs b/OSI-API/Controllers/InvoicesController.cs
index cbc7eef..c85a905 100644
--- a/OSI-API/Controllers/InvoicesController.cs
+++ b/OSI-API/Controllers/InvoicesController.cs
@@ -5,6 +5,7 @@ using System.Threading.Tasks;
 using Microsoft.AspNetCore.Http;
 using Microsoft.AspNetCore.Mvc;
 using OSI.API.Business.Objects;
+using OSI.API.Business.DAO;
 
 namespace OSI.API.Controllers
 {
@@ -20,12 +21,14 @@ namespace OSI.API.Controllers
         public override IActionResult Get()
         {
             //> get all invoices as a list of InvoiceObjects
-            throw new NotImplementedException();
+            using InvoiceDAO dao = new(new Business.Database.Base.SQLBase.DBConnectionInformation());
+            return new JsonResult(dao.GetAll());
         }
 
         public override IActionResult Get(int id)
         {
-            return new JsonResult(id);
+            using InvoiceDAO dao = new(new Business.Database.Base.SQLBase.DBConnectionInformation());
+            return new JsonResult(dao.Get(id));
         }
 
         public override IActionResult Create([FromBody] InvoiceObject input)
@@ -37,7 +40,7 @@ namespace OSI.API.Controllers
         {
             return CreatedAtAction(
                 "Get",
-                routeValues: new { id = input.InvoiceAmount },
+                routeValues: new { id = input.InvoiceNumber },
                 value: input
             );
         }
diff --git a/OSI-API/Startup.cs b/OSI-API/Startup.cs
index d122abf..60590b6 100644
--- a/OSI-API/Startup.cs
+++ b/OSI-API/Startup.cs
@@ -30,7 +30,7 @@ namespace OSI.API
             services.AddControllers();
             services.AddSwaggerGen(c =>
             {
-                c.SwaggerDoc("v1", new OpenApiInfo { Title = "OSI_API", Version = "v1" });
+                c.SwaggerDoc("v1", new OpenApiInfo { Title = "OSI.API", Version = "v1" });
             });
 
             services.AddApiVersioning(options =>
@@ -48,16 +48,13 @@ namespace OSI.API
             {
                 app.UseDeveloperExceptionPage();
                 app.UseSwagger();
-                // app.UseSwaggerUI(c => c.SwaggerEndpoint("/swagger/v1/swagger.json", "OSI_API v1"));
                 app.UseSwaggerUI(c =>
                 {
-                    c.SwaggerEndpoint("/swagger/v1/swagger.json", "Delta.Net.Core.API v1");
+                    c.SwaggerEndpoint("/swagger/v1/swagger.json", "OSI.API v1");
                     c.RoutePrefix = "api";
                 });
             }
 
-            // app.UseHttpsRedirection();
-
             app.UseRouting();
 
             app.UseAuthorization();