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The page "ReservedWords" has been deleted by JoanTouzet:

- #redirect Reserved_words
- This document details item names that have a special system meaning. It also 
details recommended item names which are not enforced by the system, but may 
help interoperability of databases if consistent names are used.
- == Reserved Item Names ==
- System reserved items start with underscore, the other items listed are 
- === _id ===
- this is the unique ID of the document
- === _rev ===
- This is the revision reference of the document
- = Proposals =
- These recommended names have never been used for anything and are proposals 
for future use.
- == Reserved Document IDs ==
- === favicon ===
- This contains an image representing the database. The icon is an attachment 
to this document, it can be in SVG or PNG format. A client application may scan 
all databases on a CouchDB server retrieving their icons.
- === Security ===
- The security document may contain a datastructure that defines the rights 
users have to all or parts of the database. This may be enforced by a client 
library or perhaps by the database.
- === form ===
- This contains a single text string to identify the user interface to be used 
to display the document. The text string could be the ID of another couchdb 
document which contains the definition of the form.
- === subject ===
- The subject should contain a single text string with a human readable 
description of the document.
- === security ===
- The security item contains a javascript function defining the identity of 
people and things allowed to read, update and delete this document. The 
function would be passed the document, the database security document, an 
object representing the person's LDAP entry (so groups etc can be looked up) 
and the operation requested (normally one of "read", "update", "delete" but 
others could be invented). It returns true to allow the operation to continue 
or false to prevent it. Using javascript in this way would allow time based 
security rules (e.g. allow updates for 1 hour after creation) and much more.

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