One of the most valuable sources firms have at their disposal is a rich cache of customer information and purchase history from their day-to-day operations, which is a type of .

One of the most valuable sources firms have at their disposal is a rich cache of customer information and purchase history from their day-to-day operations, which is a type of Internal secondary data

Explanation:

Internal secondary data: It is the data that is obtained from within the organization.

A company's internal data, such as the  sales and marketing data , customer  information system , product purchasing and usage data are few example of Internal secondary Data

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