|
|
|
Datenbanke Er-Modelle
|
|||
|---|---|---|---|
|
#18+
O4eni ho3etsia poniati.. kakie prinzipi postroenia ER-Modellei.Primary schlüssel und fremd schl.. mne isvestni, no esti je kakie nibudi osobennosti, kak rasposnati otnoschenia 1:n,esli imeutsia somnenia????ili k primeru n:n ,????? ... |
|||
|
:
Нравится:
Не нравится:
|
|||
| 04.09.2002, 13:14:12 |
|
||
|
|
start [/forum/topic.php?fid=46&msg=32048033&tid=1820628]: |
0ms |
get settings: |
6ms |
get forum list: |
9ms |
check forum access: |
2ms |
check topic access: |
2ms |
track hit: |
181ms |
get topic data: |
5ms |
get forum data: |
1ms |
get page messages: |
16ms |
get tp. blocked users: |
1ms |
| others: | 198ms |
| total: | 421ms |
| 0 / 0 |
