发明授权
- 专利标题: Automatic and dynamic design of cache groups
- 专利标题(中): 缓存组的自动和动态设计
-
申请号: US13330860申请日: 2011-12-20
-
公开(公告)号: US08812492B2公开(公告)日: 2014-08-19
- 发明人: Joachim Klein
- 申请人: Joachim Klein
- 申请人地址: DE Darmstadt
- 专利权人: Software AG
- 当前专利权人: Software AG
- 当前专利权人地址: DE Darmstadt
- 代理机构: Nixon & Vanderhye, P.C.
- 主分类号: G06F17/30
- IPC分类号: G06F17/30
摘要:
A system and method is provided for automatic and dynamic adaptation of cache groups in a database system having one or more processors. The method includes analyzing a database query and determining if a set of predicates in a predicate pattern are suitable for inclusion in one or more cache groups, with the one or more cache groups having one or more cache tables; mapping value-based predicates in the predicate pattern to a filling column in the one or more cache tables; and mapping equi-join predicates in the predicate pattern to a referential cache constraint in the one or more cache tables. New cache groups can be created for predicate patterns occurring more frequently and existing cache groups can be deleted if the frequency of the predicate pattern falls below a predetermined threshold value.
公开/授权文献
- US20130159347A1 AUTOMATIC AND DYNAMIC DESIGN OF CACHE GROUPS 公开/授权日:2013-06-20
信息查询