Changes

Database nodes are XML nodes which are either stored in a persistent database, or which contained in are a sonode of a main-called ''memory database fragment''representation. All XML fragments can be converted to a main-memory database fragments by e. g. applying the [[XQuery_Update#update|update]] or [[XQuery_Update#transform|transform]] expression on an XML fragmenta node:

copy $c db:= node-id(element hello { 'world' } modify (update {}) return $c

|Returns general information on the database system, such as the database path current values of all global and current database settingslocal [[Options]]. The {{Command|INFO}} command returns similar output is similar to .|} ==db:option== {| width='100%'|-| width='120' | '''Signatures'''|{{Func|db:option|$name as xs:string|xs:string}}|-| '''Summary'''|Returns the current value (string, integer, boolean, map) of a global or local [[Commands#INFOOptions|INFOOption]] with the specified {{Code|$name}}. The {{Command|GET}} commandworks similar.|-| '''Examples'''|* <code>db:option('dbpath')</code> returns the database path string.* <code>db:option('serializer')</code> returns a map with the current serialization parameters.* <code>declare option db:chop 'true'; db:option('chop')</code> returns {{Code|true}} (irrespective of the global value).

|Returns meta information on the database {{Code|$db}}. The output is similar to the [[Commands#INFO DB{{Command|INFO DB]] }} command.

|{{Func|db:property|$db as xs:string, $property name as xs:string|xs:anyAtomicType}}

|Returns the value (string, boolean, integer) of a property with the specified {{Code|$propertyname}} of in the database {{Code|$db}}. The available properties are the ones returned by [[#db:info|db:info]].

|{{Func|db:text|$db as xs:string, $strings as xs:string as item()*|text()*}}

|Returns all text nodes of the database {{Code|$db}} that have one of the specified {{Code|$stringstrings}} as their string value values and that are stored in the text index.

|{{Func|db:attribute|$db as xs:string, $strings as xs:string as item()*|attribute()*}}<br/>{{Func|db:attribute|$db as xs:string, $string strings as item()xs:strings*, $name as xs:string|attribute()*}}

|Returns all attribute nodes of the database {{Code|$db}} that have one of the specified {{Code|$stringstrings}} as string value values and that are stored in the attribute index.<br />If {{Code|$name}} is specified, the resulting attribute nodes are filtered by their attribute name.

|{{Func|db:token|$db as xs:string, $token tokens as item()xs:string*|attribute()*}}<br/>{{Func|db:token|$db as xs:string, $token tokens as item()xs:string*, $name as xs:string|attribute()*}}

|Returns all attribute nodes of the database {{Code|$db}}, the value values of which contains contain one of the specified {{Code|$tokentokens}}.<br />If {{Code|$name}} is specified, the resulting attribute nodes are filtered by their attribute name.

* Added: [[#db:option|db:option]]* Updated: db:output renamed to {{Function|Update|update:output}}, db:output-cache renamed to {{Function|Update|update:output-cache}}