公开(公告)号：CA2279051C

公开(公告)日：2004-12-28

申请号：CA2279051

申请日：1999-07-29

Applicant: IBM CANADA

Inventor： WINER MICHAEL J ,  ZHENG ROGER LUO Q ,  WONG CATHARINA K ,  MCKNIGHT KATHY A

IPC: G06F17/30 ,  G06F17/60

Abstract: A lock control data structure for an unit of work of an application program. The unit of work has a set of threads of access for opening a set of objects accessible to th e application program. The lock control data structure has a set of object-specific lock models corresponding to the set of objects, and a lock controller for locking each object in the set of objects . Information regarding the lock requirements for each object are stored in the corresponding object- specific lock model. The lock controller locks and unlocks each object in the set of objects based on the information stored in the corresponding object-specific lock model.

公开(公告)号：CA2310578A1

公开(公告)日：2001-12-02

申请号：CA2310578

申请日：2000-06-02

Applicant: IBM CANADA

Inventor： LEE JESSE ,  SEE YEUNG-KUEN ,  SNOWBELL MICHAEL J ,  PEREYRA HEBERT W ,  WONG CATHARINA K ,  BIRD PAUL M ,  CHAN YUK KUEN

IPC: G06F17/30

Abstract: The invention herein provides a mufti-node relational database management system that can be embodied in software for managing a database having declared temporar y tables associated with respective software application programs, comprising: a plurality of nodes, including: a catalog node for maintaining a list of identification for declared temporary tables associated with any application; a coordinator node for an application; at least one subordinate node for the application, the subordinate node having at least one partition of the declared temporary tables of the application; and a declared temporary table manager for causing the coordinator node to maintain for the application a list of declared temporar y tables.

公开(公告)号：CA2279051A1

公开(公告)日：2001-01-29

申请号：CA2279051

申请日：1999-07-29

Applicant: IBM CANADA

Inventor： WONG CATHARINA K ,  WINER MICHAEL J ,  ZHENG ROGER LUO Q ,  MCKNIGHT KATHY A

IPC: G06F17/30 ,  G06F17/60

Abstract: A lock control data structure for an unit of work of an application program. The unit of work has a set of threads of access for opening a set of objects accessible to th e application program. The lock control data structure has a set of object-specific lock models corresponding to the set of objects, and a lock controller for locking each object in the set of objects . Information regarding the lock requirements for each object are stored in the corresponding object- specific lock model. The lock controller locks and unlocks each object in the set of objects based on the information stored in the corresponding object-specific lock model.