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Talk:Create, read, update and delete

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This is an old revision of this page, as edited by LucQ (talk | contribs) at 08:05, 18 October 2007. The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Note, I made the cleanup and NPOV-section edit, but I wasn't logged in. Insomniacity 23:23, 25 Jun 2005 (UTC)

New Jersey musician

Is there any truth in this odd section about a supposed NJ musician? Insomniacity 23:23, 25 Jun 2005 (UTC)

I am he. I added the entry myself; the neutrality issue notwithstanding, you may rest assured that this is not any type of slander of another person's character. -Crud.

Disambiguation

I split out the section on the game to Crud_(game), then moved the rest here. RickScott 20:41, 13 July 2005 (UTC)[reply]

Chalk River Unidentified Deposit

The page previously stated that the word CRUD originated from the acronym Chalk River Unidentified Deposit. In fact, this appears to be a backronym -- the dictionary etymology states that crud evolved from the middle english 'crudde'. RickScott 20:41, 13 July 2005 (UTC)[reply]

HTTP Mappings

The current article has create map into the HTTP method POST and update map into the HTTP method PUT. I believe that create should map into PUT and update into POST. The reason is section 9.1.2 of RFC 2616. This section states that PUT has idempotence. In other words, when performing the same PUT request N times, the end result (resource) will be the same. POST does not have idempotence. Therefore, if you are updating with PUT, you are changing the resource and breaking idempotence. --IndyGreg 04:59, 7 September 2007 (UTC).[reply]

My reading of Section 9.1.2 is that a PUT can result either in a create or a replacement of a record (eg a delete followed by an insert). Also, a POST may result in a combination of any of insert, update and delete. The fundamental difference in the semantics between the HTML verbs and the database verbs is that the database verbs expects the application to know the state of the database before applying the verb, whereas the HTTP verb does not. For exampe, PUT means that the server should create an object if it does not already exist, and to replace it if it already exists. This does not map to CRUD at all. LucQ 08:00, 18 October 2007 (UTC)[reply]

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