The import process of DELETE / INSERT is the easiest and most efficient way to ensure that the database stays consistent with the feeds - and bear in mind, when cron.php runs the zero down-time method is used whereby products are imported into a temporary table which is then quickly swapped over to become the live table after import, so your site is never offline at all during the process.
If you did however wish to keep the id field preserved on the products table which some users like to do in order to maintain association with other information you can move to an UPDATE / INSERT method instead, which is described in this thread...
Hello Ratnesh,
The import process of DELETE / INSERT is the easiest and most efficient way to ensure that the database stays consistent with the feeds - and bear in mind, when cron.php runs the zero down-time method is used whereby products are imported into a temporary table which is then quickly swapped over to become the live table after import, so your site is never offline at all during the process.
If you did however wish to keep the id field preserved on the products table which some users like to do in order to maintain association with other information you can move to an UPDATE / INSERT method instead, which is described in this thread...
Cheers,
David.
--
PriceTapestry.com