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What is the relationship between primary key and foreign key?A foreign key is a column or a set of columns in one table that references the primary key columns in another table. The primary key is defined as a column (or set of columns) where each value is unique and identifies a single row of the table.
Does a foreign key have to match a primary key?Since each foreign key value must exactly match the corresponding primary key value, the foreign key must contain the same number and data type of columns as the primary key, and these key columns must be in the same order. A foreign key can also have different column names than the primary key.
What is the difference between a primary key and a foreign key quizlet?Question: What is the difference between a primary key and a foreign key? Answer: The primary key is the field or combination of fields that uniquely identifies each record in a table. A foreign key is a field in a related table that is also a primary key in a primary table. You just studied 9 terms!
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A foreign key is a primary key of a relation that also is a primary key in another relation.
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