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 Originally Posted by madhugp
I heard that a clustered index will be created automatically
for primary key. As per my knowledge cluster means combination of two common columns of two tables. But how does a primary key creates the
cluster index? for which cluster it creates the index?
"Clustered Index" is a SQL Server concept - closest thing in Oracle is an IOT e.g. Index Organized Table.
A PK constraint requires to have a unique index on a not nul column (or set of columns)
Pablo (Paul) Berzukov
Author of Understanding Database Administration available at amazon and other bookstores.
Disclaimer: Advice is provided to the best of my knowledge but no implicit or explicit warranties are provided. Since the advisor explicitly encourages testing any and all suggestions on a test non-production environment advisor should not held liable or responsible for any actions taken based on the given advice.
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