When would you use a surrogate key example?

What is an example of a surrogate key?

Some examples of Surrogate key are : System date & time stamp. Random alphanumeric string.

What is surrogate key in data warehouse with example?

For example, if the data warehouse contains data about 20,000 customers, who on average made 15 purchases, then the fact table will contain about 300,000 (small) surrogate key values, whereas the dimension table will contain 20,000 (large) business key values in addition to the same number of surrogate key values.

What is a surrogate key and when should you use one quizlet?

A surrogate key is used when a table does not have a unique key, or when a unique key is too long, non-numeric and may change.

What is a surrogate key and under what circumstances would you use one how do surrogate keys obtain their values?

A surrogate key is an additional column with no business value. Its sole purpose is to provide a unique value that identifies each row without considering any of the data stored in the table. By using a surrogate key, we can establish relationships between our tables using only one column.