Jak vytvořit cizí klíč v sql

Příklady kódu

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to, co je cizí klíč v sql

Foreign Key: 
It is a column that comes from a different table and
using Foreign key tables are related each other
It is the primary key of another table
It can be duplicate or null for another table
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cizí klíč v sql dbms

FOREIGN KEY (fk_col_name) 
REFERENCES target_table_name (pk_col_name);
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jak vytvořit cizí klíč v sql

how to make primary key and  foreign key in sql

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