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The key foreign policy makers are?

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Related questions

How do interest groups influence US foreign policy?

Interest groups lobby policymakers.


Can a foreign key be null?

yes .a foreign key can have null values


The foreign key uniquely identifies a record in a table T or F?

False. A foreign key is a primary of one table that is in another table. A foreign key can be repeated, so it does not uniquely identify records in the table where it is a foreign key.


How do you use foreign key in to oracle?

the foreign key referential between two tables.


Can a foreign-key column can contain duplicate values?

yep foreign key can have duplicate values


How do you apply a foreign key in a database?

The foreign key is a reference to a key (identifier) of a row in another or even the same table. When the foreign key is not null, it implies that there's an entry in the referenced table with that identifier. The syntax depends on wich database are you using, check the page in the related links below.


Explain the concept of foreign key How a foreign key differs from a primary key?

Foreign keys are used to link one database with another. A primary key is an attribute of a record that allows users to identify information.


Types of keys in database management system?

super key foreign key candidate key surrogate key unique key alternate key composite key compound key


Is foreign key a non key attribute?

a key to a different table


Why must the primary key of a parent table be determined before the foreign key in the child table?

Because the foreign key is copied from the primary key of the parent table


Can a primary key be a foreign key?

Yes, a primary key can also be a foreign key. This is known as a composite key, where one or more columns in a table are both primary keys for that table and also act as foreign keys linking to another table.


When foreign key is used?

A foreign key is when a value of one table, which is a primary key of another table. Manufacturer_table - id - name Models_table - id - manufacturer_id - name Models_table.manufacturer_id should be defined is a foreign key to the Manufacturer_table.id column