• btree primary index vs heap and secondary btree index

    From nikosv@nikos.vaggalis@gmail.com to comp.databases.ingres on Fri Sep 16 05:53:08 2022
    From Newsgroup: comp.databases.ingres

    what would be the difference between a table created with storage structure as btree with unique keys and one that is created with storage structure as heap and with a secondary b-tree index on unique keys ? i.e would the retrieval speed vary and what are the pros and cons?
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