Library of Congress Source Metadata Extension Schema SourceMD contains administrative metadata that describe any source item from which a digital archival is created. It contains elements that are common to all source items such as physical characteristics, dates, condition, disposition, and tracking information. SourceMD: Elements for a source item. SourceMD elements describe administrative characteristics of any source item. A source item is defined as the tangible analog or digital item from which an archival object is created . SourceMD contains 6 top level elements. 1. condition Description of the physical condition of the source item; 2. dimensions The physical dimensions of the source item; 3. disposition What became of the source item after digital production; 4. events The datetimes the item was received and/or disposed; 5. note General information about the source item; and 6. tracking Tracking information about the source item. SourceMDType: Complex Type for encapsulating within a single parent element the individual elements that describe an item or portion of an item. But note that the individual elements that comprise the SourceMD schema can be used independently of a source element and directly under a METS mdSec.dmWrap element. The individual elements that comprise an source element are documented under their corresponding types. SourceMDType has 2 attributes, ID: (XML ID) SOURCETYPE: the type of source item e.g. sound recording, motion picture, book, photograph. conditionType: Complex Type for recording the physical condition of an item or portion of an item. conditionType has a single attribute, ID (XML ID). dimensionsType: Complex Type for recording the dimensions of an object. dimensionsType has the following addtributes: 1. ID: an XML ID 2. HEIGHT: The height as a decimal number 3. WIDTH: the width as a decimal number 3. DEPTH: the depth as a decimal number 4. UNITS: the unit of measurement dispositionType: Complex Type for recording the disposition of an item or portion of an item. dispositionType has a single attribute, ID (XML ID). eventsType: Complex Type for recording datetimes of key events in the. source item digital production life cycle. eventsType has the following attributes: 1. ID: an XML ID; 2. DATETIME_RECEIVED: The datetime the source item was received for digital production; 3. DATETIME_DISPOSED: The datetime the source item was disposed after digital production. noteType: Complex Type for recording general information or notes about an item or portion of an item. noteType has a single attribute, ID (XML ID). trackingType: Complex Type for recording tracking information about an item or portion of an item. trackingType has the following addtributes: 1. ID: an XML ID; 2. TRACKING_TYPE: The type of tracking number e.g. MAVIS code, bar-code; 3. TRACKING_VALUE: The tracking number of an item or portion of an item.