Linking customer and transaction tables is known as what?

Linking customer and transaction tables typically represents a one-to-many relationship because one customer can be associated with multiple transactions over time. In this scenario, the customer serves as the 'one' side of the relationship, while the transaction is the 'many' side, as each transaction is related to a specific customer, but one customer can have multiple transactions recorded in the database.

In relational databases, this structure is fundamental to organizing data effectively. The customer table might have a unique identifier, such as Customer ID, which can be referenced multiple times in the transaction table, reflecting all transactions made by that customer. This way, the database can maintain comprehensive records while avoiding data redundancy. Utilizing a one-to-many relationship enhances data integrity and allows for efficient querying and reporting on customer transactions.