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kayone/marr.datamapper

Analysis updated 2026-07-11 · repo last pushed 2013-06-05

C#Audience · developerComplexity · 2/5DormantLicenseSetup · moderate

TLDR

Marr DataMapper is a C# library that automatically translates data between code objects and database tables, so developers can save and retrieve information without writing repetitive database commands by hand.

Mindmap

mindmap
  root((repo))
    What it does
      Maps objects to database
      Saves and retrieves data
      Eliminates manual queries
    Tech stack
      CSharp
      Object-oriented mapping
    Use cases
      CRM tools
      Inventory systems
      Websites with user accounts
    Audience
      CSharp developers
      App builders
    Setup
      Sparse README
      Check codebase directly
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What do people build with it?

USE CASE 1

Build a CRM tool that saves customer profiles to a database without writing raw SQL.

USE CASE 2

Create an inventory system where stock items are stored and retrieved automatically as code objects.

USE CASE 3

Develop a website with user accounts where registering and logging in reads and writes to a database seamlessly.

What is it built with?

C#.NET

How does it compare?

kayone/marr.datamapperatrblizzard/vtmb-sbox-mounterkayone/automoq
Stars—0—
LanguageC#C#C#
Last pushed2013-06-05—2012-03-15
MaintenanceDormant—Dormant
Setup difficultymoderatemoderateeasy
Complexity2/53/52/5
Audiencedeveloperdeveloperdeveloper

Figures from each repo's GitHub metadata at analysis time.

How do you get it running?

Difficulty · moderate Time to first run · 30min

The README is extremely sparse with no setup instructions, so developers will need to inspect the codebase directly to understand configuration and usage.

Open-source and freely available for anyone to use and modify.

In plain English

Marr DataMapper is a tool for developers working in C# (a popular programming language). It acts as a bridge between an application's code and a database, helping the app save and retrieve information without requiring the developer to write a lot of repetitive, manual database commands. At its core, a "data mapper" handles the translation between two different worlds. In object-oriented programming, information is organized into "objects", think of them as digital containers for things like a user profile or an order receipt. Databases, on the other hand, store information in strict tables made of rows and columns. This project automatically moves data back and forth between these objects in the code and the tables in the database, so a developer can focus on building features rather than managing the plumbing. A developer would use this when building an application that needs to store data long-term, such as a customer relationship management tool, an inventory system, or a website with user accounts. Instead of writing raw database queries every time they need to save a new user or fetch an order, the developer sets up the mapper once. From then on, they can simply interact with standard code objects, and the tool handles the underlying database communication automatically. The README is extremely sparse and does not go into detail about the specific technical features, setup instructions, or performance tradeoffs of the project. Beyond confirming it is an open-source tool freely available for anyone to use and modify, anyone interested in evaluating it would need to look directly at the codebase to understand how it operates.

Copy-paste prompts

Prompt 1
I have a C# application with a User class that has Name, Email, and CreatedAt properties. How do I use Marr DataMapper to save a new User object into a database table called Users?
Prompt 2
How do I configure Marr DataMapper to fetch all records from an Orders table and return them as a list of Order objects in my C# app?
Prompt 3
Using Marr DataMapper in C#, how do I map a property called FullName in my code to a database column called full_name without changing my class definition?

Frequently asked questions

What is marr.datamapper?

Marr DataMapper is a C# library that automatically translates data between code objects and database tables, so developers can save and retrieve information without writing repetitive database commands by hand.

What language is marr.datamapper written in?

Mainly C#. The stack also includes C#, .NET.

Is marr.datamapper actively maintained?

Dormant — no commits in 2+ years (last push 2013-06-05).

What license does marr.datamapper use?

Open-source and freely available for anyone to use and modify.

How hard is marr.datamapper to set up?

Setup difficulty is rated moderate, with roughly 30min to a first successful run.

Who is marr.datamapper for?

Mainly developer.

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