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ch08 - 8 P cfw > h H(1 Pcfw 3Pcfw O e O O 2 P(2 P cfw P cfw...

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8 8 . .  “ * H Æ  “ *
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2 >     P „  *   h ' H  *   (1) (1) 3 3  „ “ *       h ' „ ( ( )  ¶ O   ( ( )   “ * ( ( ) e   “ * ( ( ( ( ( ( ( ( ( (  “ * O  “ * ( ł  “ * )
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3 (     P „   *   § „ „  *   (2) (2) : :  “ * ¨ N  “ *         P „ “ *   › E       6 ; K +   ›   @ ° @  @ + E        n 6 ; K +   p +   P   „ “ *    E ±  ˝ > K   . .  “ *    “ *   : :  “ *  “ *   *   (conceptual design) . .  “ *     k   : :  “ *   k   k   (logical design)   → ⅰ (access method)     . .  “ *     *   : :  “ *   *   *   (physical design) s   K w    
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4 e   * ‚ £ „  “ *         F “ * F   “   ‚ £  „ “ F   “ * ‚ £ „  “ * F  “ *     P „  *   ‚ £ „ „  *   (3) (3)  “ * ‚ £ „  “ *
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5 (     P  “ *       (1) (1)   ° °   (database design) (database design) ° ° °     @   @  @    @ + E        > K +         3   ° °   (conceptual data model) (conceptual data model) o   5     (entity type)      w       K   k  E       @   K +     - ƒ   (E-R : Entity-Relationship model)     3   °   e (logical data model) (logical data model) d   K 5     4   (data type)       e     w   k E        
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6 (     P   4   3      v (2) (2)       *   : D : D D = <S, O, C> D = <S, O, C> S : p   4 (structure) ± N   “   ( p ˙  “ * ) i ˝ > K     ˙  “ *  H [ O : ( (operation) p     K w   k E                  C :   (constraint)     - o  > K +     : (S) a   4   :   4 d   K +  — N  “ *  H [
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7 (     P   4   3     ~ (3) (3)     3         ¿  6 ;  +  ∕  “ *   u   ° ° °  @ +  E   ’     °  6  +  + ›     (relational data model) (relational data model)           K 5       (hierarchical data model) (hierarchical data model)   4   l   4   {   4   4 (network data model) (network data model)     4 l     4     3       5   o c   4   (object-oriented data model) (object-oriented data model)   1   - - {   4       (object-relational data model) (object-relational data model)   1   DBMS DBMS         2         P       K    *       (relationship)   k   (   
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8 (     P {     h  fl “   (1) (1)     (entity) (entity)   4  œ 7  +  ”  +   a   (entity type) (entity type) o   K 5   a  fl (entity set) : i         k H  
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