Expert Oracle Database Architecture by Darl Kuhn & Thomas Kyte

Expert Oracle Database Architecture by Darl Kuhn & Thomas Kyte

Author:Darl Kuhn & Thomas Kyte
Language: eng
Format: epub
ISBN: 9781484274996
Publisher: Apress


Object tables: These tables are created based on an object type. They have special attributes not associated with nonobject tables, such as a system-generated REF (object identifier) for each row. Object tables are really special cases of heap, index-organized, and temporary tables, and they may include nested tables as part of their structure as well.

Blockchain tables: Blockchain tables are immutable (insert-only) tables. As rows are inserted, they are organized into a number of chains. Each row (except the first row in the chain of rows) is chained to the previous row. The rows are tamper-proof, meaning they cannot be removed or updated. Each row is signed with a cryptographic hash value which is based on the hash of the new data being inserted and the hash of the prior row in the chain. This allows companies to maintain a tamper-resistant audit trail of the current row and any historical transactions.



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