What are the key relationships in databases?
An example of an AI chatbot conversation about key relationships in databases.
What are the key relationships in databases?
In databases, the key relationships include one-to-one, one-to-many, and many-to-many relationships.
Can you explain one-to-many relationships with an example?
Sure! In a one-to-many relationship, one record in a table can be associated with multiple records in another table. For example, a single customer can have multiple orders.
What about many-to-many relationships?
In a many-to-many relationship, multiple records in one table can relate to multiple records in another table. For instance, students and courses: a student can enroll in many courses, and each course can have many students.
How do you implement these relationships in SQL?
You implement these relationships using foreign keys. For example, in a one-to-many relationship, the 'many' table will have a foreign key that references the 'one' table.
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