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12.1 DBMS?????

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Title: Author: RUC IDKE Last modified by: User Created Date: 8/9/2000 8:19:19 AM Document presentation format – PowerPoint PPT presentation

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Title: 12.1 DBMS?????


1
??????????
??????? An Introduction to Database System ???
???????
2
???? ???????
  • 12.1 DBMS?????
  • 12.2 DBMS???????????
  • 12.3 DBMS????
  • 12.4 ????
  • 12.5 ?????
  • 12.6 ?????
  • 12.7 ???????
  • 12.8 ??

3
12.1 DBMS?????
  1. ????????
  2. ??????????
  3. ????
  4. ????????????
  5. ?????????
  6. ????

4
12.1 DBMS?????(?)
  • ????????
  • ?????????????
  • ?????????
  • ??????(?????????????)
  • ????(???)???
  • ????(???????) ????

5
12.1 DBMS?????(?)
  • ??????????
  • ?????
  • ????
  • ????
  • ????
  • ??
  • ?????????????????????
  • ?????????
  • ??
  • ?????????
  • ?????????????????????????

6
12.1 DBMS?????(?)
  • ????
  • ??????(DML)
  • ??
  • ??
  • ??
  • ??
  • ??DML
  • ?????
  • ??(??)???

7
12.1 DBMS?????(?)
  • ????????????
  • ????????????????
  • ?????????(?????)
  • ??????????
  • ????????
  • ?????????

8
12.1 DBMS?????(?)
  • ?????????
  • ?????
  • ????????
  • ?????
  • ?????
  • ?????????
  • ???????????
  • ??????

9
12.1 DBMS?????(?)
  • ????
  • DBMS???????????????
  • ???DBMS????????????
  • ????????????????

10
12.2 DBMS??????????
  • 12.2.1 N??DBMS???????????
  • 12.2.2 2N????DBMS??????????
  • 12.2.3 N1????DBMS??????????
  • 12.2.4 NM??M?DBMS????N?????
  • 12.2.5 ???(Multi_Threaded) DBMS???

11
12.2.1 N??DBMS???????????
  • N?DB??--N???
  • ?????
  • SGA(Shared Global Area)
  • ?????
  • ??????
  • ????????
  • ?????
  • ?????

12
12.2.1 N??DBMS???????????
  • ??
  • ????????
  • ??????
  • ??
  • ??????????DBMS??
  • ???????????
  • ????
  • ???????DBMS

13
12.2 DBMS??????????
  • 12.2.1 N??DBMS???????????
  • 12.2.2 2N????DBMS??????????
  • 12.2.3 N1????DBMS??????????
  • 12.2.4 NM??M?DBMS????N?????
  • 12.2.5 ???(Multi_Threaded) DBMS???

14
12.2.2 2N????DBMS??????????
  • ??N???DBMS????????????
  • ?????DBMS????
  • 2N??
  • ??????(Shadow??)
  • N?????---N?DBMS??(?2N???)

15
12.2.2 2N????DBMS??????????
16
12.2.2 2N????DBMS??????????
  • ??
  • DBMS??????????????OS??
  • ????????DBMS???
  • ????????
  • ??
  • ???????????
  • ?????????,?????????
  • DBMS?????????????,???????
  • ??????????????????
  • ?????(Critical Section)
  • ????
  • ??????(?OLTP??)Oracle 7????, Ingres, Informix????

17
12.2 DBMS??????????
  • 12.2.1 N??DBMS???????????
  • 12.2.2 2N????DBMS??????????
  • 12.2.3 N1????DBMS??????????
  • 12.2.4 NM??M?DBMS????N?????
  • 12.2.5 ???(Multi_Threaded) DBMS???

18
12.2.3 N1????DBMS??????????
  • ??DBMS??????????
  • ??DBMS???????,????????(Server)
  • ????????Server?message???????
  • Server?????????????,??????????????
  • ??SGA,DBMS??????SGA
  • ??????
  • ????(Multi_Threaded)?????N1??

19
12.2.3 N1????DBMS??????????
20
12.2.3 N1????DBMS??????????
  • ??
  • ?????(Multi_Threaded)??
  • ??????,?????????,??DBMS???????
  • ??
  • DBMS?????????
  • ????????
  • ????
  • Sybase

21
12.2 DBMS??????????
  • 12.2.1 N??DBMS???????????
  • 12.2.2 2N????DBMS??????????
  • 12.2.3 N1????DBMS??????????
  • 12.2.4 NM??M?DBMS????N?????
  • 12.2.5 ???(Multi_Threaded) DBMS???

22
12.2.4 NM??M?DBMS????N?????
  • M?DBMS??-- N?????(?? M lt N)
  • DBMS??????????,????????????????DBMS??
  • ????????????????DBMS?????
  • DBMS????????????

23
12.2.4 NM??M?DBMS????N?????
24
12.2.4 NM??M?DBMS????N?????
  • ??
  • ???2N??,???????????
  • ??
  • ????2N???????
  • ???????????????????
  • DBMS????????????
  • ????
  • Oracle
  • Informix

25
12.2 DBMS??????????
  • 12.2.1 N??DBMS???????????
  • 12.2.2 2N????DBMS??????????
  • 12.2.3 N1????DBMS??????????
  • 12.2.4 NM??M?DBMS????N?????
  • 12.2.5 ???(Multi_Threaded) DBMS???

26
?? ?????
  • ????? ??(Task)? ??(Thread)
  • ??
  • ????
  • Task??????????
  • Thread???????????
  • ??Task?????Thread
  • Thread??Task?????,????????
  • ??
  • ???????????????????,????????????????

27
?? ?????(?)
28
?? ???(Multi_Threaded)DBMS
  • DBMS???Task
  • ??????????,Task??????Thread????
  • ??Thread????,????

29
?? ????????
  • ????????????
  • ????????,?????
  • ????????
  • ???????

30
12.3 DBMS????
  • 12.3.1 DBMS?????
  • 12.3.2 RDBMS???????

31
12.3.1 DBMS?????
???????????? ?RDBMS???/????????
???????,?SQL ???????????????
?????? ???????????????
???????????
32
12.3 DBMS????
  • 12.3.1 DBMS?????
  • 12.3.2 RDBMS???????

33
12.3.2 RDBMS???????
34
12.4 ????
  • 12.4.1 ???????????
  • 12.4.2 ????
  • 12.4.3 ?????

35
12.4.1 ???????????
36
12.4.1 ???????????(?)
  • DDL??????
  • ?????????
  • ???????????
  • DCL??????
  • ?DDL?????

37
12.4.1 ???????????(?)
  • DML?????
  • ????
  • ????

38
(No Transcript)
39
(No Transcript)
40
12.4.1 ???????????(?)
  • ????
  • ???-- -- --???-- -- --???
  • ???-----???
  • ???----????
  • ???----?????

41
12.4 ????
  • 12.4.1 ???????????
  • 12.4.2 ????
  • 12.4.3 ?????

42
12.4.2 ????
  • ??
  • ???,DML??????????????
  • ???,??????????,??????
  • ??
  • ??????
  • ???????
  • ??
  • ?????
  • ??
  • ???SQL

43
12.4 ????
  • 12.4.1 ???????????
  • 12.4.2 ????
  • 12.4.3 ?????

44
12.4.3 ?????
  • ?????????
  • ??????,??????
  • ???????,?????
  • ???????????????????
  • ??
  • ????DML???,???????????
  • ?????????
  • ???,??????????

45
(No Transcript)
46
12.4.3 ?????(?)
  • ????????
  • ??????(??????????????)
  • ????
  • ???
  • ???????
  • ?????
  • ????????????
  • ??????????
  • ??????????????????
  • ?????????????????

47
12.5 ?????
48
12.5 ?????
  • 12.5.1 ??????????
  • 12.5.2 ???????????

49
12.5.1 ??????????
50
12.5 ?????
  • 12.5.1 ??????????
  • 12.5.2 ???????????

51
12.5.2 ???????????
  • ????????????
  • ???????
  • ????????
  • ??\?????
  • ?????????
  • ?????

52
??????????????
  • ???????
  • ???????????????(FIND)
  • ????????(NEXT,PRIOR,FIRST,LAST)?
  • ??????????(INSERT)
  • ?????????????(GET)
  • ???????????(DELETE)
  • ?????????????(REPLACE)
  • ???????
  • ??????(BEGIN TRANSACTION)
  • ????(COMMIT)
  • ????(ROLLBACK)

53
?????????
  • ?????(WRITELOG)
  • ?????(READLOG)
  • ??????(SCANLOG)
  • ?????????(UNDO)
  • ?????????(REDO)

54
??????????
  • ??????????????????????????????

55
????/?????
  • ??????
  • ?????
  • ???? ?????????
  • ??????????
  • ??????????

56
???????????
  • ??????????????????????????????
  • B??????
  • ????B???
  • ??
  • ??
  • ??

57
7. ?????
58
12.6 ?????
  • ????????
  • ?????
  • ?????
  • ????
  • ??????????
  • ??DBMS??????
  • ????????????????
  • ??????
  • ???????,???

59
12.6 ?????(?)
  • ????????
  • ??
  • ??
  • ?????
  • ?????
  • ?? ??????
  • ?? ??????,????,????
  • ???????????
  • ????????

60
???????????
61
?????
  • ???????
  • ??????
  • ??????
  • hash????
  • ???????
  • LRU??
  • FIFO??
  • ????
  • ?????
  • ????

62
12.7 ???????
  • ???????????
  • ?????,??????
  • ?????,???,???
  • ?????
  • ????
  • ??????????????
  • ????
  • ???????
  • ????

63
12.7 ???????(?)
  • ????(DD)???
  • ??????
  • ????
  • ??????????
  • ???????????????
  • ??????
  • ???????
  • ???????????????
  • ?????B???????Hash????

64
12.8 ??
  • DBMS???
  • ??????
  • ????
  • ???
  • ????
  • ???

65
12.8 ??(?)
  • DBMS?????
  • ?????
  • ????
  • ???????
  • ??????????
  • ?????????
  • ??

66
12.8 ??(?)
  • DBMS?????
  • N??
  • 2N??
  • MN??
  • N1??

67
12.8 ??(?)
  • DBMS?????
  • ??????
  • ????
  • DBMS???????
  • ?????
  • ?????
  • ?????
  • ???????
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