,

  , > .: ():. > > > > 4
[ ] : ..★★ ★★..
 

4

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2014- 5- 10   #1381
Fahad Alzahrani
 
Fahad Alzahrani
:
: 114098
: Fri Jul 2012
: 723
:
: 111584
: 168
Fahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond reputeFahad Alzahrani has a reputation beyond repute
:
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Fahad Alzahrani
: ..★★ ★★..
isa

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+ + +
isa .

.
 
2014- 5- 10   #1382
 
:
: 60539
: Sun Sep 2010
: 1,806
:
: 1715
: 76
has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future has a brilliant future
:
:
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: ..★★ ★★..
:
ωαяđ . . !

1. , :
/
/
/
/


2. :
/
/
/
/

3. :
/
/
/
/

4. ( dba ) :
/ ( ‫ddl‫ data definition language )

/ (view definition language )
/ (data manipulation language dml )
/ ( query compiler )

5. ( conceptual level ) ( external level ) :
/ ( logical data independence )
/ (physical data independence )
/ ( data sharing )
/ data information conversion ) )

6. , :
/ ( the external or view level )
/ the conceptual level ) )
/ internal level ) )
/ ( conceptual mapping external )

7. data about data :
/ " data "
/ " metadata "
/ entity " "
/ " relationship "

8. dba ) ( :
/
/ ,
/
/

9. 2007 :
/
/
/
/


10. 2007 :
/
/
/
/ -


11. :
/ ( primary key )
/ ( foreign kay )
/ ( partial kay )
/ ( seconday kay )

12. , :
/ ( primary key )
/ ( foreign kay )
/ ( partial kay )
/ ( seconday kay )

13. , ( erd ) :
/
/
/
/

14. , :
/
/
/
/
7.

15- , ( static data ) :
/
/
/
/

16. , , rollback , commit :
/ backup
/ transaction
/ checkpoint
/ recover manager

13

 
2014- 5- 10   #1383
Farah Altamimi
 
Farah Altamimi
:
: 98215
: Wed Dec 2011
: 682
:
: 5808
: 63
Farah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enoughFarah Altamimi will become famous soon enough
:
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Farah Altamimi
: ..★★ ★★..
:
13

 
2014- 5- 10   #1384
@
 
@
:
: 124112
: Sun Oct 2012
: 17,718
:
: 3031591
: 3257
@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute@ has a reputation beyond repute
:
:
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@
: ..★★ ★★..
a
 
2014- 5- 10   #1385
 
:
: 124234
: Mon Oct 2012
: 4,124
:
: 282254
: 372
has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute
:
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: ..★★ ★★..


..........
 
2014- 5- 10   #1386
 
:
: 115558
: Wed Aug 2012
: 1,228
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: 7185
: 69
has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute
:
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: ..★★ ★★..



13

/ .!


~
 
2014- 5- 10   #1387
 
:
: 115558
: Wed Aug 2012
: 1,228
:
: 7185
: 69
has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute
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: ..★★ ★★..




~
 
2014- 5- 10   #1388
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: 174460
: Wed Dec 2013
: 317
:
: 11667
: 58
has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute
:
:
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: ..★★ ★★..


 
2014- 5- 10   #1389
 
:
: 124827
: Sun Oct 2012
: 1,311
:
: 1581163
: 1643
has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute has a reputation beyond repute
:
:
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: ..★★ ★★..
13. , ( erd ) :
/
/
/
/

14. , :
/
/
/
/
7.
 
2014- 5- 10   #1390
Hanoon15
 
Hanoon15
:
: 138535
: Fri Mar 2013
: 48
:
: 2124
: 0
Hanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enoughHanoon15 will become famous soon enough
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Hanoon15
: ..★★ ★★..
:(
 
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