D a t a b a s e s
Database models
Hierarchical structure
Network structure
Relational structure
Entities and Attributes
Keys and
relationships
Relational database advantages
-increase flexibility
-increase scalability and
performance
-reduced information
redundancy
-Increase information
quality
-Increase information
security
Database Management System (DBMS)
A software through which users
and application programs interact with a database
Data-driven
website
An interactive
website kept constantly updated and relevant to the needs of its customer
through the use of database
Data-Driven web site business advantage
-
development : allow
owner make change anytime
-
content management :
requires a programmer to make updates
-
future expand-ability :
enable the site to grow faster than would be possible with a static site
-
minimizing human error :
ensure the required information is filled out correctly
-
more efficient
-
improved stability
-
cutting production and
update cost
data-driven business
intelligence
Integrating information
among multiple databases
Forward integration
Takes information entered into a given system and sends it automatically to
all downstream systems and processes
Backward integration
Takes information entered into a given system and sends it automatically to
all upstream systems and processes
building a central repository specifically for integrated information
without integration , an organization will :
# spend considerable time entering the same info in multiple system
# suffer from low quality and inconsistency typically embedded in redundant info
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