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. 817.

 

8. (Posts)

,
P_ID N(3)
P_POST C(30)
P_SAL N(8,2)

 

9. (Rooms)

,
R_NO N(3)
R_TEL C(10)  

 

10. (Employees)

,
E_ID N(4)
E_FNAME C(20)
, E_LNAME (30)
E_BORN D  
E_SEX C(1)
E_POST N(3) ( Posts)
E_ROOM N(3) ( Rooms)
E_TEL C(10)
E_INN (12)
E_PASSP C(12)
E_ORG (30)
E_PDATE D
E_ADDR C(50)  

 

11. (Customers)

,
C_ID N(4)
C_NAME C(30)
C_ADDR C(50)

 

12. (Authors)

,
A_ID N(4)
A_FNAME C(20)
, A_LNAME (30)
A_INN (12)  
A_PASSP C(12)
A_ORG (30)
A_PDATE D
A_ADDR C(50)
A_TEL C(30)

 

13. (Books)

,
B_CONTRACT N(6)
B_DATE D
B_MAN N(4) ( Employees)
B_TITLE N(40)
B_PRICE N(6,2)
B_ADVANCE N(10,2)
B_FEE N(8,2)
B_PUBL D  
B_CIRCUL N(5)  
B_EDIT N(4) ( Employees)
B_REST N(5)

 

14. (Orders)

,
O_ID N(6)
O_COMPANY N(4) ( Customers)
O_DATE D
O_READY D  

 

15. Ȗ (Titles)

,
( ) B_ID N(6) ( Books)
A_ID N(4) ( Authors)
A_NO N(1)
A_FEE N(3)

 

16. (Items)

,
O_ID N(6) ( Orders)
( ) B_ID N(6) ( Books)
B_COUNT N(4)

 

17. Ȗ (Editors)

,
( ) B_ID N(6) ( Books)
E_ID N(4) ( Employees)




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