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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

1

I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

C h a p t e r

5

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Data

Resource

Management

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

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.

• Outline the advantages of the database management approach to managing the data resources of a business.

• Explain how database management software helps business professionals and supports business operations and management of a business.

Chapter Objectives

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

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

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

4 Logical Data Elements

EmployeeRecord 2

EmployeeRecord 1

EmployeeRecord 3

EmployeeRecord 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

PersonnelDatabase

PayrollFile

BenefitsFile

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

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OperatingSystem

DatabaseManagement

System

ApplicationPrograms

OperatingSystem

DatabaseManagement

System

ApplicationPrograms

Databases

DataDictionary

DatabaseManagement

•Database Development•Database Interrogation•Database Maintenance•Application Development

Database Management Systems

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

6

Network Server

Network Server

ExternalDatabases onthe Internet &

Online Services

Client PC or

NCOperational

Databases ofthe Organization

DataMart

End UserDatabases

DataWarehouse

DistributedDatabases on

Intranets & Other

Networks

Major Types of Databases

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

7 Data Warehouse and Data Mining

Client PC or

NCAnalyticalData StoreEnterpriseWarehouseData MartData

AcquisitionSubsystem

WarehouseDesignSubsystem

DataManagementSubsystem

Data Accessand DeliverySubsystem

Data Accessand DeliverySubsystem

Web Information

System

Web Information

System

OperationalDatabases

MetadataDirectory

MetadataRepository

MetadataManagementSubsystem

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

8 Web-Based Systems

WebBrowser

Web ServerSoftware

Web ServerSoftware

NetworkServerThe Internet

IntranetsExtranets

Client PCsor NCs

HTML pagesGIF image filesVideo files

Web Objects

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

9 Data Resource Management

DataAdministratio

n

DataPlanning

DatabaseAdministration

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

10

Database Structures

Employee2

Employee2

A

Empno Ename Etitle Dept

1

2 B

3 C

Relational Structure

Network StructureHierarchical Structure

Employee3

Project BProject A

Dept Dname Dloc Dmgr

A

B

C

Employee2

Employee1

Project A

Employee1

Dept A Dept BDept

Project B

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

11 Database Structures (cont)

East

WestDenver

FebActual Budget

Margin

Sales TV

VCR

TV

VCR

MultidimensionalDatabase Structure

Attributes•Customer•BalanceOperations•Deposit•Withdraw

Bank Account Object

Attributes•Credit Line•Mthly StatementOperations•Calculate Interest•Print Mthly Statement

Checking AccountObject

Attributes•Credit Line•Mthly StatementOperations•Calculate Interest•Print Mthly Statement

Savings AccountObject

Object-OrientedDatabase Structure

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

12

Key Fields

SequentialAccess

SequentialOrganization

IndexedSequential

AccessMethod

KeyTransformation

Direct Access

URLs

Accessing Files and Databases

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

13 Database Development

User NeedsDescriptionUser NeedsDescription

1. Data Planning1. Data Planning

Enterprise ModelEnterprise Model

2. RequirementsSpecifications

2. RequirementsSpecifications

3. Conceptual Design3. Conceptual Design

4. Logical Design4. Logical Design

Physical ModelsPhysical Models

5. Physical Design5. Physical Design

Data ModelsData Models

Logical ModelsLogical Models

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

14

• Data resource management is a critical management activity. Management roles include database administration, data planning, and data administration.

• Under the database management approach, data records are consolidated into databases that can be accessed by many different application programs, serving multiple users.

Chapter Summary

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I n t r o d u c t i o n t o I n f o r m a t i o n S y s t e m s Tenth EditionJames A. O’Brien

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• Database management systems are software packages that simplify the creation, use, and maintenance of databases.

• Several types of databases are used by organizations including operational, distributed, external, data warehouses and data marts.

• Database development for large corporate databases requires a top-down planning effort involving planning, requirements specification and logical and physical design.

Chapter Summary (cont)