🗊Презентация Data Base Architecture

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Data Base Architecture , слайд №1Data Base Architecture , слайд №2Data Base Architecture , слайд №3Data Base Architecture , слайд №4Data Base Architecture , слайд №5Data Base Architecture , слайд №6Data Base Architecture , слайд №7Data Base Architecture , слайд №8Data Base Architecture , слайд №9Data Base Architecture , слайд №10
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Lecture 2. Data Base Architecture National Aviation University Computer Science Faculty Department of Software Engineering
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Lecture 2. Data Base Architecture National Aviation University Computer Science Faculty Department of Software Engineering

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

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

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Architecture 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
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Architecture 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

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Data Base Architecture , слайд №5
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Conceptual 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
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Conceptual 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

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

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Internal 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
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Internal 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

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

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Data Base Architecture , слайд №10
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