1. Prof. HeleMai Haav:
CSC 230 Spring *03
Overview: Databases

2. A database system (DBMS) is a program product for keeping computerized records about an enterprise
sales database
university database
web examples ?

3. Database system provides efficient, convenient, and safe multi-user storage of and access to massive amounts of persistent data Banking system data-? Massive -many gigabytes, on disk persistent -data outlives programs that operate it multi-user -Jane and ATM1; John and ATM2; the same account number safe -from system failures and malicious users convenient -simple commands efficient - do not search all files to find info

4. Major Database Systems
Oracle-Oracle server, runs Unix, Win NT:
DB2 Universal Database-IBM, Unix
Informix Dynamic Server 2000, Unix
Microsoft SQL Server, Access
Sybase

5. A Relational database

6. Object Relational database

9. Database System Architecture

10. SQL Agent Module
Connection session
SQL-server
SQL client
The SQL Client-server interaction

13. Database Users End users application programmers- write apps
casual- SQL queries
naïve- menus
application programmers- write apps
database administrators-supervise the DBMS

14. Data Warehouses

15. Roughly 90% of decisions are made without the benefit of the information you already have.
The most intelligent solution is an open, integrated data warehouse and business intelligence infrastructure based on proven technology and industry "best practices" to turn that data into a strategic resource while reducing risk.

16. Data warehousing is bringing data from operational databases to a single warehouse to do
analysis (OLAP)
and mining

17. What is in data warehouse?
“fact data”
sales transactions, course enrollments
update frequently, very large
“dimension data”
store items, students, courses
update infrequently, not as large

18. Two models for data warehouse
dim
Relational OLAP
star schema
Multidimensional OLAP
data cube,
facts in cells
dimensions form axes
facts
time
Total sales
region
facts
sales channel

21. Oracle 11i
education.oracle.com
Sybase Industry Warehouse Studio
Adaptive Server IQ

22. Oracle 9i Oracle9i Database
Oracle9i Database Release 2 is the first major follow-on release to the award-winning Oracle9i Database. In addition to numerous quality and performance enhancements, Oracle9iDB Release 2 features full XML database functionality with the new XML DB feature, enhancements to the groundbreaking Oracle9i Real Application Clusters and additional self-tuning and self-management capabilities to help improve productivity and efficiency. In addition, the built-in OLAP functionality has been expanded and significant enhancements and tunings have been made for Windows and Linux systems.

23. Sybase http://www.sybase.com/

24. MS Access http://www.microsoft.com/office/using/column06.asp

25. Rolling Thunder Bicycles (an example)