Capitolul II Structurarea bazelor de date
Capitolul II Structurarea bazelor de date
Capitolul II Structurarea bazelor de date
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• Să se afişeze toŃi câinii dintr-o Ńară (<strong>de</strong> ex. Germania), indiferent <strong>de</strong> rasă.<br />
select "CAINE"."RASA" as "RASA",<br />
"TARI"."TARA" as "TARA"<br />
from "TARI" "TARI",<br />
"CAINE" "CAINE"<br />
where "TARI"."TARA" ='Germania'<br />
and "CAINE"."COD_TARA" =tari.cod_tara<br />
rezultatul:<br />
• Să se afişeze toŃi câinii <strong>de</strong> talie medie dintr-o Ńară.<br />
select "CAINE"."RASA" as "RASA",<br />
"TARI"."TARA" as "TARA",<br />
"TALIE"."TALIE" as "TALIE"<br />
from "CAINE" "CAINE",<br />
"TALIE" "TALIE",<br />
"TARI" "TARI"<br />
where "TARI"."TARA" ='Germania'<br />
and "TALIE"."TALIE" ='medie'<br />
and "CAINE"."COD_TALIE" =talie.cod_talie<br />
and "CAINE"."COD_TARA" =TARI.COD_TARA<br />
or<strong>de</strong>r by CAINE.RASA ASC<br />
rezultatul:<br />
• Să se afişeze toŃi câinii utilitari, indiferent <strong>de</strong> Ńară sau talie.<br />
select<br />
from<br />
"CAINE"."RASA" as "RASA",<br />
"SCOP"."SCOP" as "SCOP",<br />
"TALIE"."TALIE" as "TALIE",<br />
"TARI"."TARA" as "TARA"<br />
"TARI" "TARI",<br />
"TALIE" "TALIE",