Transcript pendahuluan - Binus Repository

Matakuliah
Tahun
Versi
: M0184 / Pengolahan Data Distribusi
: 2005
:
Session – 5
DISTRIBUTED DATABASE
ARCHITECTURE
OBJECTIVES
• MODELS FOR DISTRIBUTED DBMS
• DISTRIBUTED DATABASE ARCHITECTURE
Models for Distributed DBMS
Models for Distributed DBMS
•Autonomy
Autonomy refers to the distribution of control not data. It indicates the
degree to which individual DMBS can operate independently
•Distribution
Distribution dimension refers to data. Considering distribution of data
over multiple sites.
•Heterogeneity
Heterogeneity may occur in various forms of distributed
system, ranging from hardware heterogeneity and
differences in networking protocols to variation in data
manager
Distributed DBMS Architecture
• Client Server
• Peer-to-peer Distributed System
• Multi Databases Architecture
(Heterogeneous Distributed System)
Client Server
Peer-To-Peer Distributed System
ES1
ES2
ESn
Refer from three-tier database
architecture
GCS
LIS : Local Internal Schema
LCS1
LCS2
LCSn
LCS : Local Conceptual Schema
GCS : Global Conceptual Schema
LIS1
LIS2
LISn
ES : External Schema
Multi Databases Architecture
(Heterogeneous Distributed
System)
LES11
LES12
GES1
GES2
LES13
GCS
GES3
LESn1
LESn2
LCS1
LCSn
LIS1
LISn
LESn3