Upgrade 1.5.2 to 2.3.02

Dont show products, go to products/select product/ links / stores and click default, where is this data stored in the database? to change every products more easy
thanks

Can you clarify your question?

Sorry, i upgrade opencart database 2.3 from 1.5.2 table to table with phpadmin, but the products dont show in new store, i have go products, select a product/ links -> Store -->and activate chekbox "Default option", and after save and show this product in the new store, there are 1.200 products, the questios is:
Store--default of this product ¿where table is stored in the database?, i change this field in the table for all products
Thanks