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What ensures the value of the foreign key matches another tables primary key?
Wiki User
∙ 12y ago
It is the DBMS that ensures the value of the foreign key matches another table's primary key when referential integrity constraints are enabled within the DBMS
Wiki User
∙ 12y ago
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What is a primary key of one file that appears in another file?
A primary key is one that uniquely identifies a record . Also there are cases when primary key of one file appears in another file. In that case the key is called Foreign key.
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.
What Is the primary key of another table that is included for purposes of establishing relationships?
Foreign Key
foreign key?
when a primary key from one table is stored as an attribute of another table
What is referential dependency in database?
Referential dependency in a database refers to the relationship between tables where a foreign key in one table references a primary key in another table. This relationship ensures data integrity and consistency by enforcing constraints that maintain the validity of the data being stored. If a record with a foreign key is deleted or modified, the referential integrity ensures that the associated records in other tables are also updated or deleted to maintain consistency.
What is a field whose values are required to match the primary key in another table?
A Foreign Key.
What does the term foreign key mean in databases?
A foreign key is a field in a database table that is used to establish a relationship with another table. It ensures referential integrity by enforcing a link between two tables based on a matching key. This key is typically a primary key in the referenced table.
What is the foreign key constraint?
foreign key constraint defines a column or combinations of columns whose values match the primary key of another table.
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.
Who has primary responsability for Foreign humanitary assistance?
NATO has a primary responsibility for Foreign Humanitarian Assistance FHA.
Who has the primary responsibility for foreign humanitarian assistance?
NATO (The Host Nation) has the primary responsibility for foreign humanitarian assistance.
Who has primary responsibility for foreign humanitarian assistance?
NATO (The Host Nation) has the primary responsibility for foreign humanitarian assistance.
