Changes
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== Basics ==
Id marker scan queries are used for fetching a list of [[ContentclassContentClass|ContentClasses]] identified by different scan codes ([http://dev.metaio.com/sdk/tracking-config/optical-tracking/id-marker/ ID Marker], [http://en.wikipedia.org/wiki/Barcode Barcode], [http://en.wikipedia.org/wiki/QRcode QR Code]) from the database. All of these objects have to implement the classification [[SYSCLS_OBJECTWITHIDMARKER]] in order to be found as the query result. The id marker scan query itself inherits functionality from [[Query|Query]], implements the classification interface [[SYSCLS_IDMARKERSCANQUERY]] and can be used in different scenarios to identify objects by scan codes:
* data fetching (n records)
* finding a single or a set of recordset(s)
* [[QUERY]]
* [[QUERYITEM]]
