Optimising mediator queries to distributed engineering systems

被引：0
|
作者：
Nyström, M
Risch, T
机构：
[1] Lulea Univ Technol, S-97187 Lulea, Sweden
[2] Uppsala Univ, S-75105 Uppsala, Sweden
来源：
DATABASE SYSTEMS FOR ADVANCED APPLICATIONS | 2004年 / 2973卷
关键词：
D O I：
暂无
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
Data and computations of a CAD system have been wrapped by a mediator system using CORBA's IIOP Protocol. This allows ad hoc declarative mediator queries to be translated into optimised execution plans sending dynamic IIOP messages to a CAD server. Queries may call computational methods provided only by the CAD system. Dynamic query re-optimisation taking into account what data is currently materialised in the mediator substantially improves the performance compared to static optimisation, despite the added optimisation time. The approach provides both increased flexibility and efficiency compared to the conventional navigational use of CORBA-based CAD interfaces. Furthermore, CAD independences is provided since transparent queries and views can be defined over different CAD systems.
引用
收藏
页码：469 / 475
页数：7
相关论文
共 50 条
  • [1] Processing queries with expensive functions and large objects in distributed mediator systems
    Bouganim, L
    Fabret, F
    Porto, F
    Valduriez, P
    17TH INTERNATIONAL CONFERENCE ON DATA ENGINEERING, PROCEEDINGS, 2001, : 91 - 98
  • [2] Optimising the distributed execution of join queries in polynomial time
    Reid, DJ
    COMPUTERS & MATHEMATICS WITH APPLICATIONS, 1999, 37 (03) : 105 - 126
  • [3] On the equivalence of distributed systems with queries and communication
    Abiteboul, Serge
    ten Cate, Balder
    Katsis, Yannis
    JOURNAL OF COMPUTER AND SYSTEM SCIENCES, 2013, 79 (06) : 739 - 762
  • [4] AN OPTIMIZATION OF QUERIES IN DISTRIBUTED DATABASE-SYSTEMS
    CHUNG, CW
    IRANI, KB
    JOURNAL OF PARALLEL AND DISTRIBUTED COMPUTING, 1986, 3 (02) : 137 - 157
  • [5] Distributed systems engineering
    Hutchison, D
    SOFTWARE ENGINEERING JOURNAL, 1996, 11 (06): : 378 - 379
  • [6] Efficient querying of distributed resources in mediator systems
    Manolescu, I
    Bouganim, L
    Fabret, F
    Simon, E
    ON THE MOVE TO MEANINGFUL INTERNET SYSTEMS 2002: COOPLS, DOA, AND ODBASE, 2002, 2519 : 468 - 485
  • [7] Repairing queries in a mediator approach
    Bidault, A
    Froidevaux, C
    Safer, B
    ECAI 2000: 14TH EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE, PROCEEDINGS, 2000, 54 : 406 - 410
  • [8] Preferences for queries in a mediator approach
    Bidault, A
    Boulakia, SC
    Froidevaux, C
    ECAI 2004: 16TH EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE, PROCEEDINGS, 2004, 110 : 963 - 964
  • [9] Similarity between queries in a mediator
    Bidault, A
    Froidevaux, C
    Safar, B
    ECAI 2002: 15TH EUROPEAN CONFERENCE ON ARTIFICIAL INTELLIGENCE, PROCEEDINGS, 2002, 77 : 235 - 239
  • [10] Synchronised Range Queries in Distributed Simulations of Multiagent Systems
    Suryanarayanan, Vinoth
    Theodoropoulos, Georgios
    ACM TRANSACTIONS ON MODELING AND COMPUTER SIMULATION, 2013, 23 (04):
12345