Unformatted text preview: Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 6 Different Types of Knowledge
Types of Knowledge • When representing or storing data, there is a • Limited Data Sharing
Data Sharing difference between: • Lengthy Development Times – Domain (or application) knowledge • Excessive Program Maintenance – Technology related (or physical representation)
Can you provide an example? • Database management systems separate them. BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 7 BUSI 335 Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 8 Database Management Systems
Database Management Systems The Database Vision
The Database Vision
serves as an
programs. BUSI 335 Database Management Systems (DBMS)
are computer programs that enable a user to
computer programs that enable user to
create and update files, to select and retrieve
data, and to generate various outputs and reports.
and to generate various outputs and reports
Without having to know how data is
physically represented and stored. • A database is a structured collection of
data accessed and utilized by many
different applications and users.
Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 9 BUSI 335 Database Agnosticity Database agnosticity permits multiple applications
to share the same database.
share Most eMost e-business software are database agnostic,
meaning that the DBMS is independent of
the application software. It also permits the data to be physically stored
apart from the application,
which facilitates a client-server architecture
in which multiple users access a shared database. Thi
This permits upgrading or modifying the application
without having to reorganize, restructure,
or modify the database software
or modify the database software.
Copyright © 2009-10 Y.M. Cheung, William Tan and Carson Woo 10 Database Agnosticity (cont’d)
Agnosticity Databases are frequently connected
Databases are frequently connected
to eto e-busines...
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