(Verb Phrase) , .
, (Parent-to-Child).
Parent-to-Child, Child-to-Parent.
(Cardinality) .
4 , 5:
, 0, 1 - ;
, 1 ( );
Z , 0 1 ( );
, .
. 5.
(referential integrity (RI)) - , - , .
: |
(Verb Phrase) , . , (Parent-to-Child). Parent-to-Child, Child-to-Parent.
(Cardinality) . 4 , 5: , 0, 1 - ; , 1 ( ); Z , 0 1 ( ); , . . 5.
(referential integrity (RI)) - , - , .
: 2015-10-06; !; : 483 | : : , . |