What is Primary key, foreign key ? what is primary index? secondary index?
Primary index:
the primary index contains key fields of a table and a pointer to non-key fields of the table.
The primary index is created automatically when a table is created in database and moreover you can further define reference to the primary index which are known as Secondary index.
Primary index:
the primary index contains key fields of a table and a pointer to non-key fields of the table.
The primary index is created automatically when a table is created in database and moreover you can further define reference to the primary index which are known as Secondary index.
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