"My customer database includes basic customer information such as name, phone number, and email, along with more in-depth data like purchase history, feedback, and interaction records. I also incorporated custom fields to categorize customers by preferences and purchase frequency, allowing me to target specific groups for personalized marketing campaigns."

click this link to view my own made customer data base:

https://docs.google.com/spreadsheets/d/1OaE-7F9T5oWAW-B9QbvNZwPsc5w3kn2rnkaRP2yDzh8/edit?usp=sharing