For a customer database containing 50 customers and recording data about the customer number, name, street, city, state, zip code, and current balance, answer the following
i. How many records and fields are in the database?
ii. What is the purpose of using primary key and foreign key?
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Answer:
50,49 respectively
primary key is the unique key of a table and forign key is the primary key of another table
Explanation:
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