System and method for querying inventory

A computer based inventory querying method implemented by utilizing an inventory querying system, the inventory querying method comprising the steps of:

• providing a plurality of branch databases for storing inventory data for distributed storage locations;
• receiving query parameters input by one or more users via one or more client computers, and generating one or more query sentences according to the query parameters;
• searching a central database for required inventory data and update times of the required inventory data;
• determining whether the required inventory data exist in the central database;
• searching the branch databases for update records of the required inventory data if the required inventory data exist in the central database, and updating inventory data stored in the central database according to the update records;
• searching the branch databases for the required inventory data if the required inventory data do not exist in the central database;
• and
• outputting one or more query results and generating one or more query result statements according to the query results.

A computer based inventory querying method implemented by utilizing an inventory querying system, the inventory querying method comprising the steps of:

• providing a central database, and a plurality of branch databases for storing inventory data for distributed storage locations;
• searching a central database for required inventory data and update times of the required inventory data;
• determining whether the required inventory data exist in the central database;
• searching the branch databases to see whether update records of the required inventory data exist if the required inventory data exist in the central database, and updating inventory data stored in the central database if said the update records exist;
• searching the branch databases for the required inventory data if the required inventory data do not exist in the central database, and further adding the inventory data into the central database if the required data exist in at least one of the branch databases.