whats a foreign key
Solution
A foreign key is a column or a set of columns in a relational database table that provides a link between data in two tables. It acts as a cross-reference between tables because it references the primary key of another table, thereby establishing a link between them.
Here are the steps to understand what a foreign key is:
- Understand the concept of a relational database: A relational database is a type of database that stores and provides access to data points that are related to
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In a relational database, what is a foreign key?
What is a primary key & foreign key?
In a relational database, what is a foreign key?A key used for encrypting dataA key used to unlock database tablesA key that points to a primary key in another tableA key used to sort data alphabetically
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What is a foreign key in a relational database?OptionsA key that is used for encryptionA key that is used for indexingA key that establishes a link between two tablesA key that uniquely identifies a record in a table
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