Product Documentation

FairCom ADO.NET Driver - Developer's Guide

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Now we will build some table/file relationships using the FairCom DB ADO.NET Data Provider using C#.

This tutorial will advance the concepts introduced in the first tutorial by expanding the number of tables. We will define key columns/fields and create specific indexes for each table to form a relational model database.

Like all other examples in the c-tree tutorial series, this tutorial simplifies the creation and use of a database into four simple steps: Initialize(), Define(), Manage(), and You’re Done() !

Tutorial #2: Relational Model and Indexing

Here we add a bit more complexity, introducing multiple tables, with related indices in order to form a simple "relational" database simulating an Order Entry system. Here is an overview of what will be created:

JDBC Relational Picture

  • Initialize() - Connects to the FairCom Database Engine.
  • Define() - Defines and creates the "custmast", "custordr", "ordritem" and the "itemmast" tables/files with related indexes.
  • Manage() - Adds some related rows/records to all tables/files. Then queries the database.
  • Done() - Disconnects from FairCom Database Engine.

Note our simple Main() function:

using System;

using System.Collections;

using Ctree.Data.SqlClient;

namespace CSharpTutorial


class Tutorial2


// declare connection, command and reader objects

static CtreeSqlConnection conn;

static CtreeSqlCommand cmd;

static CtreeSqlDataReader rdr;


// main()


// The main() function implements the concept of "init, define, manage

// and you're done..."


static void Main()






Console.Write("\nPress <ENTER> key to exit . . .");



We suggest opening the source code with your own editor.

Continue now to review these four steps.

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