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Data Base Architecture

Содержание

1. Data Base Architecture
2. CONTENTS ANSI/SPARC architecture Conceptual level External level Internal level Mappings Data base management system
3. Different Meaning of «architecture» Functional architecture Software
4. Architecture ANSI/X3/SPARC ANSI/X3/SPARC – Study Group on
5. Слайд 5
6. Conceptual Level A uniform basis of understanding
7. External Level Convinient data representation Promotes logical independance Promotes data safety problem Supports different external interfaces
8. Internal Level Provides DB adjustments Supports
9. Mappings External-conceptual Conceptual-internal and vise-versa
10. Слайд 10
11. Скачать презентанцию

CONTENTS ANSI/SPARC architecture Conceptual level External level Internal level Mappings Data base management system

Слайды и текст этой презентации

Слайд 1Lecture 2. Data Base Architecture
National Aviation University
Computer Science Faculty
Department of

Software Engineering

Lecture 2. Data Base ArchitectureNational Aviation UniversityComputer Science FacultyDepartment of Software Engineering

Слайд 2CONTENTS
ANSI/SPARC architecture
Conceptual level
External level
Internal level
Mappings

Data base management system

CONTENTS ANSI/SPARC architecture Conceptual level External level Internal level Mappings Data base management system

Слайд 3Different Meaning of «architecture»
Functional architecture

Software architecture

Hardware architecture

Network architecture

Implementation architecture

Information architecture

Different Meaning of «architecture» Functional architecture Software architecture Hardware architecture Network architecture Implementation architecture Information architecture

Слайд 4Architecture ANSI/X3/SPARC
ANSI/X3/SPARC – Study Group on Data Base Management

Systems

Areas of DB technology standardization

Only DB interfaces may

be standardized

Interfaces ?DB architecture

Architecture ANSI/X3/SPARC ANSI/X3/SPARC – Study Group on Data Base Management Systems Areas of DB technology standardization

Слайд 5

Слайд 6Conceptual Level
A uniform basis of understanding of AD
Includes only

conceptually relevant aspects
Feature of allowed evolution of DB
Basis of mappings

external-intenral levels
Supports the data independance
Supports centralized administration
Stability

Conceptual Level A uniform basis of understanding of ADIncludes only conceptually relevant aspectsFeature of allowed evolution of

Слайд 7External Level
Convinient data representation

Promotes logical independance

Promotes data

safety problem
Supports different external interfaces

External Level Convinient data representation Promotes logical independance Promotes data safety problem Supports different external interfaces

Слайд 8Internal Level
Provides DB adjustments
Supports data storage structures

and access methods
DB efficiency, prformance, redundancy
Physical data independance

Promotes data safety problem
Mapping internal schema to the OS data structures

Internal Level Provides DB adjustments Supports data storage structures and access methods DB efficiency, prformance,

Слайд 9Mappings
External-conceptual
Conceptual-internal
and vise-versa

Mappings External-conceptual Conceptual-internal and vise-versa

Слайд 10

Скачать презентацию

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