公开(公告)号：US20130246450A1

公开(公告)日：2013-09-19

申请号：US13873146

申请日：2013-04-29

Applicant: SALESFORCE.COM, INC

Inventor： Craig Weissman ,  Dave Moellenhoff ,  Simon Wong

IPC: G06F17/30

CPC classification number: G06F17/30442 ,  G06F17/30528 ,  G06F17/30536

Abstract: In embodiments, methods and systems for improving a query in a database system are provided. These method and system embodiments can enable greater contextual knowledge about the types and use of data in tables underlying a relational database to be employed to improve query efficiency. By employing contextual information, embodiments can provide improved queries and/or make recommendations to a query optimizer of a database system to improve its operation based upon knowledge of the data and/or application gathered. Embodiments can be useful in improving query performance in multi-tenant database systems.