Introductory Tutorial

..\sdk\sql.embedded\tutorials\eSQL_Tutorial1.pc

This tutorial will take you through the basic use of the c-treeACE SQL ESQL - Embedded SQL Interface

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 #1: Introductory - Simple Single Table

We wanted to keep this program as simple as possible. This program does the following:

• Initialize() - Connects to the c-treeACE Database Engine.
• Define() - Defines and creates a "customer master" (custmast) table/file.
• Manage() - Adds a few rows/records; Reads the rows/records back from the database; displays the column/field content; and then deletes the rows/records.
• Done() - Disconnects from c-treeACE Database Engine.

Note our simple mainline:

/*

 * main()

 *

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

 * and you're done…"

 */

int main(int argc, char* argv[])

{

   Initialize();

   Define();

   Manage();

   Done();

   printf(DH_STRING_LITERAL("\nPress <ENTER> key to exit . . .\n"));

   getchar();

   return(0);

}

We suggest opening the source code with your own editor.

Continue now to review these four steps.