diff --git a/src/ReC.Application/Common/Dto/ConnectionDto.cs b/src/ReC.Application/Common/Dto/ConnectionDto.cs
new file mode 100644
index 0000000..7f45796
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/ConnectionDto.cs
@@ -0,0 +1,32 @@
+namespace ReC.Application.Common.Dto;
+
+public record ConnectionDto
+{
+    public short? Id { get; set; }
+
+    public string? Bezeichnung { get; set; }
+
+    public string? SqlProvider { get; set; }
+
+    public string? Server { get; set; }
+
+    public string? Datenbank { get; set; }
+
+    public string? Username { get; set; }
+
+    public string? Password { get; set; }
+
+    public string? Bemerkung { get; set; }
+
+    public bool? Aktiv { get; set; }
+
+    public string? ErstelltWer { get; set; }
+
+    public DateTime? ErstelltWann { get; set; }
+
+    public string? GeandertWer { get; set; }
+
+    public DateTime? GeaendertWann { get; set; }
+
+    public bool? SysConnection { get; set; }
+}
\ No newline at end of file
diff --git a/src/ReC.Application/Common/Dto/DtoMappingProfile.cs b/src/ReC.Application/Common/Dto/DtoMappingProfile.cs
index c4b67ee..ed9ffd3 100644
--- a/src/ReC.Application/Common/Dto/DtoMappingProfile.cs
+++ b/src/ReC.Application/Common/Dto/DtoMappingProfile.cs
@@ -8,5 +8,13 @@ public class DtoMappingProfile : AutoMapper.Profile
     {
         CreateMap<RecActionView, RecActionViewDto>();
         CreateMap<OutRes, OutResDto>();
+
+
+        CreateMap<Connection, ConnectionDto>();
+        CreateMap<EndpointAuth, EndpointAuthDto>();
+        CreateMap<Endpoint, EndpointDto>();
+        CreateMap<EndpointParam, EndpointParamDto>();
+        CreateMap<Profile, ProfileDto>();
+        CreateMap<RecAction, RecActionDto>();
     }
 }
diff --git a/src/ReC.Application/Common/Dto/EndpointAuthDto.cs b/src/ReC.Application/Common/Dto/EndpointAuthDto.cs
new file mode 100644
index 0000000..8bd4636
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/EndpointAuthDto.cs
@@ -0,0 +1,40 @@
+using ReC.Domain.Constants;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ReC.Application.Common.Dto;
+
+[Table("TBREC_CFG_ENDPOINT_AUTH")]
+public record EndpointAuthDto
+{
+    public long? Id { get; set; }
+
+    public bool? Active { get; set; }
+
+    public string? Description { get; set; }
+
+    public EndpointAuthType? Type { get; set; }
+
+    public string? ApiKey { get; set; }
+
+    public string? ApiValue { get; set; }
+
+    public ApiKeyLocation? ApiKeyAddTo { get; set; }
+
+    public string? Token { get; set; }
+
+    public string? Username { get; set; }
+
+    public string? Password { get; set; }
+
+    public string? Domain { get; set; }
+
+    public string? Workstation { get; set; }
+
+    public string? AddedWho { get; set; }
+
+    public DateTime? AddedWhen { get; set; }
+
+    public string? ChangedWho { get; set; }
+
+    public DateTime? ChangedWhen { get; set; }
+}
diff --git a/src/ReC.Application/Common/Dto/EndpointDto.cs b/src/ReC.Application/Common/Dto/EndpointDto.cs
new file mode 100644
index 0000000..3505d50
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/EndpointDto.cs
@@ -0,0 +1,22 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ReC.Application.Common.Dto;
+
+public record EndpointDto
+{
+    public long Id { get; set; }
+
+    public bool? Active { get; set; }
+
+    public string? Description { get; set; }
+
+    public string? Uri { get; set; }
+
+    public string? AddedWho { get; set; }
+
+    public DateTime? AddedWhen { get; set; }
+
+    public string? ChangedWho { get; set; }
+
+    public DateTime? ChangedWhen { get; set; }
+}
\ No newline at end of file
diff --git a/src/ReC.Application/Common/Dto/EndpointParamDto.cs b/src/ReC.Application/Common/Dto/EndpointParamDto.cs
new file mode 100644
index 0000000..7b7343c
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/EndpointParamDto.cs
@@ -0,0 +1,33 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ReC.Application.Common.Dto;
+
+/// <summary>
+/// Represents the TBREC_CFG_ENDPOINT_PARAMS table.
+/// All properties are nullable to provide flexibility on the database side,
+/// preventing breaking changes if columns are altered to be nullable in production.
+/// </summary>
+public record EndpointParamDto
+{
+    public long? Id { get; set; }
+
+    public bool? Active { get; set; }
+
+    public string? Description { get; set; }
+
+    public short? GroupId { get; set; }
+
+    public byte? Sequence { get; set; }
+
+    public string? Key { get; set; }
+
+    public string? Value { get; set; }
+
+    public string? AddedWho { get; set; }
+
+    public DateTime? AddedWhen { get; set; }
+
+    public string? ChangedWho { get; set; }
+
+    public DateTime? ChangedWhen { get; set; }
+}
\ No newline at end of file
diff --git a/src/ReC.Application/Common/Dto/ProfileDto.cs b/src/ReC.Application/Common/Dto/ProfileDto.cs
new file mode 100644
index 0000000..a0e01aa
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/ProfileDto.cs
@@ -0,0 +1,31 @@
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ReC.Application.Common.Dto;
+
+[Table("TBREC_CFG_PROFILE", Schema = "dbo")]
+public record ProfileDto
+{
+    public long Id { get; set; }
+
+    public bool? Active { get; set; }
+
+    public string? Type { get; set; }
+
+    public string? Mandantor { get; set; }
+
+    public string? Name { get; set; }
+
+    public string? Description { get; set; }
+
+    public string? LogLevel { get; set; }
+
+    public string? Language { get; set; }
+
+    public string? AddedWho { get; set; }
+
+    public DateTime? AddedWhen { get; set; }
+
+    public string? ChangedWho { get; set; }
+
+    public DateTime? ChangedWhen { get; set; }
+}
\ No newline at end of file
diff --git a/src/ReC.Application/Common/Dto/RecActionDto.cs b/src/ReC.Application/Common/Dto/RecActionDto.cs
new file mode 100644
index 0000000..9fcf277
--- /dev/null
+++ b/src/ReC.Application/Common/Dto/RecActionDto.cs
@@ -0,0 +1,54 @@
+using ReC.Domain.Constants;
+using System.ComponentModel.DataAnnotations.Schema;
+
+namespace ReC.Application.Common.Dto;
+
+[Table("TBREC_CFG_ACTION")]
+public record RecActionDto
+{
+    public long? Id { get; set; }
+
+    public long? ProfileId { get; set; }
+
+    public ProfileDto? Profile { get; set; }
+
+    public bool? Active { get; set; }
+
+    public byte? Sequence { get; set; }
+
+    public long? EndpointId { get; set; }
+
+    public EndpointDto? Endpoint { get; set; }
+
+    public long? EndpointAuthId { get; set; }
+
+    public EndpointAuthDto? EndpointAuth { get; set; }
+
+    public short? EndpointParamsId { get; set; }
+
+    public short? SqlConnectionId { get; set; }
+
+    public ConnectionDto? SqlConnection { get; set; }
+
+    public string? Type { get; set; }
+
+    public string? PreprocessingQuery { get; set; }
+
+    public string? HeaderQuery { get; set; }
+
+    public string? BodyQuery { get; set; }
+
+    public string? PostprocessingQuery { get; set; }
+
+    public ErrorAction? ErrorAction { get; set; }
+
+    public string? AddedWho { get; set; }
+
+    public DateTime? AddedWhen { get; set; }
+
+    public string? ChangedWho { get; set; }
+
+    public DateTime? ChangedWhen { get; set; }
+
+    public OutResDto? OutRes { get; set; }
+}
\ No newline at end of file
diff --git a/src/ReC.Application/Common/Dto/RecActionViewDto.cs b/src/ReC.Application/Common/Dto/RecActionViewDto.cs
index ec5c344..4e78374 100644
--- a/src/ReC.Application/Common/Dto/RecActionViewDto.cs
+++ b/src/ReC.Application/Common/Dto/RecActionViewDto.cs
@@ -1,5 +1,4 @@
-using ReC.Application.Common.Constants;
-using ReC.Domain.Constants;
+using ReC.Domain.Constants;
 
 namespace ReC.Application.Common.Dto;
 
diff --git a/src/ReC.Application/Common/Interfaces/IRecDbContext.cs b/src/ReC.Application/Common/Interfaces/IRecDbContext.cs
index e0046fc..f0e2bf4 100644
--- a/src/ReC.Application/Common/Interfaces/IRecDbContext.cs
+++ b/src/ReC.Application/Common/Interfaces/IRecDbContext.cs
@@ -15,15 +15,15 @@ public interface IRecDbContext
 
     public DbSet<BodyQueryResult> BodyQueryResults { get; set; }
 
-    public DbSet<Connection> Connections { get; set; }
+    public DbSet<ConnectionDto> Connections { get; set; }
 
-    public DbSet<Endpoint> Endpoints { get; set; }
+    public DbSet<EndpointDto> Endpoints { get; set; }
 
-    public DbSet<EndpointAuth> EndpointAuths { get; set; }
+    public DbSet<EndpointAuthDto> EndpointAuths { get; set; }
 
-    public DbSet<Profile> Profiles { get; set; }
+    public DbSet<ProfileDto> Profiles { get; set; }
 
-    public DbSet<RecAction> RecActions { get; set; }
+    public DbSet<RecActionDto> RecActions { get; set; }
 
     public Task<int> SaveChangesAsync(CancellationToken cancel = default);
 }
\ No newline at end of file
diff --git a/src/ReC.Application/Endpoints/Commands/ObtainEndpointCommand.cs.cs b/src/ReC.Application/Endpoints/Commands/ObtainEndpointCommand.cs.cs
index ca401c5..9a1df6a 100644
--- a/src/ReC.Application/Endpoints/Commands/ObtainEndpointCommand.cs.cs
+++ b/src/ReC.Application/Endpoints/Commands/ObtainEndpointCommand.cs.cs
@@ -5,14 +5,14 @@ using ReC.Domain.Entities;
 
 namespace ReC.Application.Endpoints.Commands;
 
-public class ObtainEndpointCommand : IRequest<Endpoint>
+public class ObtainEndpointCommand : IRequest<EndpointDto>
 {
     public string Uri { get; init; } = null!;
 }
 
-public class ObtainEndpointCommandHandler(IRepository<Endpoint> repo) : IRequestHandler<ObtainEndpointCommand, Endpoint>
+public class ObtainEndpointCommandHandler(IRepository<EndpointDto> repo) : IRequestHandler<ObtainEndpointCommand, EndpointDto>
 {
-    public async Task<Endpoint> Handle(ObtainEndpointCommand request, CancellationToken cancel)
+    public async Task<EndpointDto> Handle(ObtainEndpointCommand request, CancellationToken cancel)
     {
         var endpoint = await repo.Where(e => e.Uri == request.Uri).FirstOrDefaultAsync(cancel);
 
diff --git a/src/ReC.Application/Endpoints/MappingProfile.cs b/src/ReC.Application/Endpoints/MappingProfile.cs
index 8bfbd0f..b392e07 100644
--- a/src/ReC.Application/Endpoints/MappingProfile.cs
+++ b/src/ReC.Application/Endpoints/MappingProfile.cs
@@ -8,7 +8,7 @@ public class MappingProfile : AutoMapper.Profile
 {
     public MappingProfile()
     {
-        CreateMap<ObtainEndpointCommand, Endpoint>()
+        CreateMap<ObtainEndpointCommand, EndpointDto>()
             .ForMember(e => e.Active, exp => exp.MapFrom(cmd => true))
             .ForMember(e => e.AddedWhen, exp => exp.MapFrom(cmd => DateTime.UtcNow))
             .ForMember(e => e.AddedWho, exp => exp.MapFrom(cmd => "ReC.API"));
diff --git a/src/ReC.Application/RecActionViews/MappingProfile.cs b/src/ReC.Application/RecActionViews/MappingProfile.cs
index 13f659b..67c5950 100644
--- a/src/ReC.Application/RecActionViews/MappingProfile.cs
+++ b/src/ReC.Application/RecActionViews/MappingProfile.cs
@@ -8,7 +8,7 @@ public class MappingProfile : AutoMapper.Profile
 {
     public MappingProfile()
     {
-        CreateMap<CreateRecActionCommand, RecAction>()
+        CreateMap<CreateRecActionCommand, RecActionDto>()
             .ForMember(e => e.Active, exp => exp.MapFrom(cmd => true))
             .ForMember(e => e.AddedWhen, exp => exp.MapFrom(cmd => DateTime.UtcNow))
             .ForMember(e => e.AddedWho, exp => exp.MapFrom(cmd => "ReC.API"));
diff --git a/src/ReC.Application/RecActions/Commands/CreateRecActionCommand.cs b/src/ReC.Application/RecActions/Commands/CreateRecActionCommand.cs
index 28816be..0605a7d 100644
--- a/src/ReC.Application/RecActions/Commands/CreateRecActionCommand.cs
+++ b/src/ReC.Application/RecActions/Commands/CreateRecActionCommand.cs
@@ -27,7 +27,7 @@ public record CreateRecActionCommand : IRequest
     public long? EndpointAuthId { get; set; }
 }
 
-public class CreateRecActionCommandHandler(ISender sender, IRepository<RecAction> repo) : IRequestHandler<CreateRecActionCommand>
+public class CreateRecActionCommandHandler(ISender sender, IRepository<RecActionDto> repo) : IRequestHandler<CreateRecActionCommand>
 {
     public async Task Handle(CreateRecActionCommand request, CancellationToken cancel)
     {
diff --git a/src/ReC.Application/RecActions/Commands/DeleteRecActionsCommand.cs b/src/ReC.Application/RecActions/Commands/DeleteRecActionsCommand.cs
index 84e52d9..92e93a9 100644
--- a/src/ReC.Application/RecActions/Commands/DeleteRecActionsCommand.cs
+++ b/src/ReC.Application/RecActions/Commands/DeleteRecActionsCommand.cs
@@ -11,7 +11,7 @@ public class DeleteRecActionsCommand : IRequest
     public required long ProfileId { get; init; }
 }
 
-public class DeleteRecActionsCommandHandler(IRepository<RecAction> repo) : IRequestHandler<DeleteRecActionsCommand>
+public class DeleteRecActionsCommandHandler(IRepository<RecActionDto> repo) : IRequestHandler<DeleteRecActionsCommand>
 {
     public async Task Handle(DeleteRecActionsCommand request, CancellationToken cancel)
     {