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Logical Data Elements Employee Record 2 Employee Record 1 Employee Record 3 Employee Record 4 NameSSSalaryNameSSSalaryNameSSSalaryNameSSSalary Data Personnel.

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Presentation on theme: "Logical Data Elements Employee Record 2 Employee Record 1 Employee Record 3 Employee Record 4 NameSSSalaryNameSSSalaryNameSSSalaryNameSSSalary Data Personnel."— Presentation transcript:

1 Logical Data Elements Employee Record 2 Employee Record 1 Employee Record 3 Employee Record 4 NameSSSalaryNameSSSalaryNameSSSalaryNameSSSalary Data Personnel Database Payroll File Benefits File

2 Operating System Database Management System Application Programs Operating System Database Management System Application Programs Databases Data Dictionary Database Management Database Development Database Interrogation Database Maintenance Application Development Database Management Systems

3 Network 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

4 Data 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

5 Web-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

6 Data Resource Management Data Administration Data Planning Database Administration

7 Database Structures Employee 2 Employee 2 A Empno EnameEtitle Dept 1 2B 3C Relational Structure Network Structure Hierarchical Structure Employee 3 Project B Project A Dept DnameDlocDmgr A B C Employee 2 Employee 1 Project A Employee 1 Dept A Dept B Dept Project B

8 Database Structures (cont) East West Denver Feb Actual Budget Margin Sales TV VCR TV VCR Multidimensional Database Structure 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 Database Structure

9 Key Fields Sequential Access Sequential Organization Indexed Sequential Access Method Key Transformation Direct Access URLs Accessing Files and Databases

10 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

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