Define

The Define() step is where specific data definitions are established by your application and/or process. This involves defining columns/fields and creating the tables/files with optional indices.

Below is the code for Define():

/********************************************************

*                                                       *

* db_create:    creates the data files and indices.     *

*               If any of the files already exist there *

*               will be an error. The files are closed  *

*               so all intended file modes take effect. *

*                                                       *

********************************************************/

#ifdef PROTOTYPE

VOID db_create(void)

#else

VOID db_create()

#endif

{

	/* Create the data file         */

	if (CreateDataFile(INVENTDAT,"invent.dat",sizeof(invent),4096,ctVIRTUAL|ctSHARED|ctFIXED))

		terminate("Could not create invent.dat",INVENTDAT);

	/* the second parameter is no longer used */

	if (CloseCtFile(INVENTDAT,0))

		terminate("Could not close invent.dat after creation",INVENTDAT);

	/* Create the index file        */

	if (CreateIndexFile(INVENTIDX,"invent.idx",25,0,0,0,4096,ctVIRTUAL|ctSHARED))

		terminate("Could not create invent.idx",INVENTIDX);

	if (CloseCtFile(INVENTIDX,0))

		terminate("Could not close invent.idx after creation",INVENTIDX);

	printf("\nSuccessfully created data files and indices");

	return;

}