?????? ?????? ????? - File Management System - PowerPoint PPT Presentation

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?????? ?????? ????? - File Management System

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... VSAM IBM ... File Management System ... – PowerPoint PPT presentation

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Title: ?????? ?????? ????? - File Management System


1
??? 2 ??????? ?????? ?????? ???? ??????
2
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  • ??, ???, ?????,????
  • ????? ?????
    ?????, ?????? ??????, ?????
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    ???? ??????, ???? ?????

3
(No Transcript)
4
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  • ?? ?????? ????? ????? ????? ??? ?? ????
  • ??????? ?????? ???? ?????? ????? ??????? ??????
    ?? ???????, ?????? ??????? ???.
  • ????? ?????? ??? ??????? ????? - ???? ???? ?????
  • ???? ??????? ???????

5
?????? ?????? ????? -
File Management System
  • ?????? ?? ????? ?????? ????? ????? ?? ???????
  • ????? ???? ?????? ????? ???????
  • ????? ????????? ????? ??????? ??? ????? ???
    ??????? ?????? ?????
  • ????? ????? VSAM ?? IBM

6
?????? ?????? ????? -
File Management System
  • ??????? ?????? ?????? ?? ??????? ??????? ?? ?????
    (???? ?????, ??????, ???? ????? ?????)
  • ????? ??????? ?????? ??? ?????? ????? ?????
    ??????? ?????

7
(No Transcript)
8
?????? ?????? ????? -
File Management System
  • 3 ??????? ????? ????? ????? ????, ???? -
  • ?? ??? ????? ?? ????? ????? ?????
  • ?? ?????? ????? ????? ???? ???? ?? ????? ??????
    ?????? ?????
  • ?????? ?????? ????? ???? ????? ?????? ??? ??????
    ??? ????? ????? ????

9
?????? ?????? ????? -
File Management System
  • ??????? -
  • ?????? ??????? ???? ???? ????? ???? ???? ?????
    ????? ?? ?? ?????? ????? ??? ??? ????
  • ??? ????? ????? ???????? ????? ???????
    ?? ????? ????? ?????? ???? ????? ?????? ??????
    ??? ??????? ?????? ??????? ???? - ??? ??????
    ????? ????

10
????? ?????? ????? ??????
  • ???? ?????? ???? ?? ?????? ??????? ?????? ??????
    ?????? ???????? ?? ????? ??????? ??? ????????
    ??????
  • ????? ??????? ??????? ?? ??????? ???? ????
    ??????? ?? ???? ?????? ??????? ?? ???? ????
    ??????? ????.

11
????? ?????? ????? ??????
  • ??? ?? ???? ??????? ????? ???? ????
  • ???? ????? ???? ?????? ????? ???? ????
  • ?????? ?? ?? ??????? ????? ???? ???

12
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  • ??-???? ????? ?????? ??? ??????? ?????? ???? ????
    ???? ???????
  • ??? ??????? ?????? ????? - ????? ??????? ??? ???
    ???????? ????? ??????? ??? ????? ??? ???????
    ??????

13
????? ?????? ????? ?????? ??????? RDBMS
Relational Data Base Management System
  • ????? ??????? ??????? ??????? ????? ???? ??????
    ???????? ?? ??????? ????? ?? ????????? ???????
  • ????? ?- 3 ???????? ???????
    ????? ??????? (Data Definition)
    ????? ??????? (Data Manipulation)
    ????? ?????? (Integrity Constraints)

14
????? ??????? (Data Manipulation)
  • ???? ????? ??????? ???? ??????? ?????? ?? ?????
    ???? ?? ?????? ??????
    ????? ??????
    ???? ?????? ??? ????? ?????
    ?????? ??????
    ????? ????? ????? ?????
    ????? ????? ?????

15
????? ?????? (Integrity Constraints)
  • ????? ?????? ???? ???????
    ???? ????? ??????
    ???? ?????? ??? ???????
  • ??????
    ????? ??????? ???????
    ????? ?????? ?????

16
(No Transcript)
17
(No Transcript)
18
????? ??????? (Global Schema)
  • ????? ?? ???????
  • ?????? ??? ????
  • ????? ??????? (Data Type) ?? ?? ?????
  • ???? ????? (Primary Key)
  • ????? ?????? ??? ??????
  • ??????? ?? ????? ?????

19
??? ?????? ?????? (DDL)Data Definition Language
  • ???? ?????? ?????? ?????? ????????
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  • ????? ??????, ??????, ????? ??????, ???? ?????
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  • ??????? (Triggers) ???????? ?????? ???????
    ??????? ?????? ???????

20
???? ?????? ?????? ?????
21
??-????? (Sub Schema) /?????? ?????? (View)
  • ??? ????? ??????? ??????? ?? ?? ?????? ????????
    ?? ?????? ?? ?? ?????? ??????
  • ?????? ????? ??? ????? ????? ??? (View) ???????
    ??????? ??????
  • ????? ??????
    ????? ????? ?? ??? ??????? ??
    ???????, ?????? ????? ????
    ????????? ?? ???????, ?????? ????
    ????? ????? ??????
    ???? ?????? ???????
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