• Explain the importance of data resource management to an organization, and how it can be implemented by database management, database administration, and data planning activities..
Trang 1C h a p t e r
5
Data
Resource
Management
Trang 2• Explain the importance of data resource
management to an organization, and how it can
be implemented by database management,
database administration, and data planning
activities.
management approach to managing the data
resources of a business.
helps business professionals and supports
business operations and management of a
business.
Chapter Objectives
Trang 3• Provide examples to illustrate each of the following concepts:
– Major types of databases – Data warehouses and data mining – Logical data elements
– Fundamental database structures – Database access methods
– Database development.
Chapter Objectives
Trang 4Logical Data Elements
Employee Record 2
Employee Record 1 Employee Record 3 Employee Record 4
Name SS Salary Name SS Salary Name SS Salary Name SS Salary
Data Data Data Data Data Data Data Data Data Data Data Data
Personnel Database
Payroll File Benefits File
Trang 5Operating System
Database Management System
Application Programs
Operating System
Database Management System
Application Programs
Databases
Data Dictionary
Database Management
• Database Interrogation
• Database Maintenance
• Application Development
Database Management Systems
Trang 6Network Server
Network Server
External Databases on the Internet & Online Services
Client
PC or NC
Operational Databases of the Organization
Data Mart
End User Databases Data Warehouse
Distributed
Databases on
Intranets &
Other Networks
Major Types of Databases
Trang 7Data Warehouse and Data Mining
Client
PC or NC
Analytical Data Store Enterprise Warehouse Data Mart
Data
Acquisition
Subsystem
Warehouse
Design
Subsystem
Data Management Subsystem
Data Access and Delivery Subsystem
Data Access and Delivery Subsystem
Web Information System
Web Information System
Operational
Databases
Metadata Directory
Metadata Repository
Metadata Management Subsystem
Trang 8Web-Based Systems
Web Browser
Web Server Software
Web Server Software
Network Server
The Internet
Intranets
Extranets
Client PCs
or NCs
HTML pages GIF image files Video files
Web Objects
Trang 9Data Resource Management
Data Administration
Data Planning
Database Administration
Trang 100 Database Structures
Employee 2
Employee 2
A
Empno Ename Etitle Dept 1
Relational Structure
Network Structure Hierarchical Structure
Employee 3
Project B Project A
Dept Dname Dloc Dmgr
A B C
Employee 2
Employee 1
Project A
Employee
1
Dept
Project B
Trang 111 Database Structures (cont)
East
West Denver
Feb
Actual Budget
Margin
Sales TV
VCR TV VCR
Multidimensional
Attributes
• Customer
• Balance
Operations
• Deposit
• Withdraw
Bank Account Object
Attributes
• Credit Line
• Mthly Statement
Operations
• Calculate Interest
• Print Mthly Statement
Checking Account Object
Attributes
• Credit Line
• Mthly Statement
Operations
• Calculate Interest
• Print Mthly Statement
Savings Account Object
Object-Oriented
Trang 12Key Fields
Sequential Access
Sequential Organization
Indexed Sequential Access Method
Key Transformation
Direct Access
URLs
Accessing Files and Databases
Trang 133 Database Development
User Needs Description
User Needs Description
1 Data Planning
Enterprise Model
2 Requirements Specifications
2 Requirements Specifications
3 Conceptual Design
4 Logical Design
Physical Models
5 Physical Design
Data Models Logical Models
Trang 14management activity Management roles
include database administration, data planning, and data administration.
data records are consolidated into databases that can be accessed by many different
application programs, serving multiple users.
Chapter Summary
Trang 15packages that simplify the creation, use, and
maintenance of databases.
organizations including operational,
distributed, external, data warehouses and data marts.
databases requires a top-down planning effort involving planning, requirements specification and logical and physical design.
Chapter Summary (cont)