Surrogate and Natural Keys and Why They are Needed in Star Schema Model

Surrogate and Natural keys
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Surrogate keys, also known as the synthetic primary key, are automatically generated into a table when a new record is inserted. A database declared to be the table's primary key generates a surrogate key. The surrogate key lacks any inbuilt meaning and is the unique key because it is usually created automatically for each record embedded in the table (Shobirin et al., 2017). The surrogate key is meaningless because it cannot convey any significance in business regarding the record it is linked to in any table. Also, the surrogate key is sequential.
This means that it is doled out in successive requests every time new records are created in a table, starting with one and moving up to the highest number needed (Sohail & Dominic, 2015). The surrogate key is a unique identifier always added to a table to support star schema. For example, in a case where we have two tables indicating two different schoo...