what is the Surrogate key?and wt is the diff between Primary
key and Surrogate Key?
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Answer Posted / jayaraj
Primary key is a type of key where the data inside the
column should be unique and should not be null.we generally
use the primary key to access any of the rows of a table by
using the primary key column.when a table don't have a
primary key then we assign a primary key to the table which
is known as surrogate key for accessing any row of the
table. means the key will act like a primary key for the
table.
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