Patent ID: 8346747

Claim:
A computer-implemented method to provide a database table adaptable to include tenant-specific and tenant-neutral columns, the method comprising: receiving, from a first tenant of a plurality of tenants, a request to adapt a database table in a multi-tenant database system to include a first tenant-specific column that is specific to the first tenant, wherein the database table has an associated schema specifying that the database table includes an extended field; adapting the database table to include the first tenant-specific column by generating a first description file corresponding to the first tenant and to the database table according to the received request and by operation of one or more computer processors, the first description file associating the extended field with the first tenant-specific column; and rewriting, based on the first description file, a data processing request received from the first tenant and pertaining to the first tenant-specific column, wherein the first description file is located according to identification information contained in the data processing request, wherein data processing is performed using the rewritten data processing request.