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You could also target by content an update to doubly-linked list: insert before the leftmost cell value 'XYZ'; delete 3 cells to the right of the rightmost cell value 'ABC'.

You could also target by content an update to doubly-linked list: insert before the leftmost cell value 'XYZ'; delete 3 cells to the right of the rightmost cell value 'ABC'.

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The rewrites for updates given in this approach take that a target for update can be any relational expression, with a view name (virtual relvar) merely standing for its defining expression in a target context.

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The rewrites for updates given in this approach take it that a target for update can be any relational expression, with a view name (virtual relvar) merely standing for its defining expression in a target context.

== [[Update through views: rewrites]] ==

== [[Update through views: rewrites]] ==

Click on the section heading to go to the page with rewrites.

Click on the section heading to go to the page with rewrites.

Update through views: a possible approach - Revision history

AntC: /* Musings: a possible comparison */