OpenWMS Metadata Guide

Source Metadata


Last updated: April 24th, 2009
Name
layerDetail
Group Label
Layer Detail
Schema
AES 4.4.2.1.1.2.2.1.1 (layerType)
Definition
Layer Detail is a parent element describing the physical properties, role, and order of the various layers of the media object. It contains the following attribute and subelements:
Type
Thickness
Composition
Role
Order
Usage Note
Each of the subelements is used once within each layerDetail instance to describe the layer. Multiple instances of layerDetail, with each subelement, will provide a complete description of all the layers of the object.
Repeatable
Y
Name
layerDetailType
Label
Layer Detail - Type
Schema
AES 4.4.2.1.1.2.2.1.1.3.1 (roleType)
Definition
The primary purpose served by a particular layer of the media.
Usage Note
Allows the cataloger to specify multiple layers, in order to provide characteristics of each, such as the thickness of an emulsion.
Controlled Vocabulary
Film. Top coat; Emulsion; Subbing; Base; Backing; Non-curl coating [source: NFSA, Integrated Publishing]
Videotape. Backcoat; Basefilm; Binder; Magnetic coating [source: Wheeler]
Videodisc. Base; Reflective layer; Protective layer
Audiotape. backcoatLayer; substrateMaterialLayer; binderLayer; oxideCoatingLayer [source: AES]
Optical disc. substrateMaterialLayer; binderLayer; reflectiveLayer; protectiveLayer [source: AES]
Analog disc. substrateMaterialLayer; fillerLayer; surfaceLayer [source: AES]
Cylinder. substrateMaterialLayer; fillerLayer; surfaceLayer [source: AES]
Repeatable
N
Name
layerDetailThickness
Label
not applicable; does not appear on form
Schema
AES 4.4.2.1.1.2.2.1.1.1 (thickness)
Definition
LayerDetailThickness is a parent element for subelements Value and Unit. The thickness of the described media layer, i.e., the distance through the layer. Thickness is comprised of a decimal numeral followed by one of the following units of measure: Mil(s) (thousandths of an inch); millimeter(s); centimeter(s); micrometer(s); inch(es).
Repeatable
N
Name
layerDetailThicknessValue
Label
Layer Detail - Thickness
Schema
rulib
Definition
Within the Layer Detail thickness dimension, the number of units of measure.
Usage Note
To describe fractional values, prefer a decimal numeral unless common usage dictates otherwise ('3.5 mils' not '3-1/2 mils'). Use metric system measurements where practical. The term recorded here is designed to precede the Layer Detail Thickness Unit in public displays, resulting in a statement such as: 5 micrometer(s)
Format
Arabic numeral.
Example
5
Repeatable
N
Name
layerDetailThicknessUnit
Label
Layer Detail - Thickness Unit
Schema
rulib
Definition
The unit of measure used to describe the thickness of a layer.
Usage Note
The term recorded here is designed to follow the Layer Detail Thickness Value in public displays, resulting in a statement such as:
25 micrometer(s)
16.2 micrometer(s)
Controlled Vocabulary
mil(s) (thousandths of an inch); millimeter(s); centimeter(s); micrometer(s); inch(es)
Repeatable
N
Name
layerDetailComposition
Label
Layer Detail - Composition
Schema
AES 4.4.2.1.1.2.2.1.1.2 (composition attribute of layerType)
Definition
The makeup of the described media layer, such as 'nitrate' for the base layer of film.
Format
Input as free-text string except for sourceType Film when layerDetail type=base
Controlled Vocabulary
(only used for "sourceType"=Film when "layerDetailType"=base). nitrate; mixed (safety and nitrate); safety (undetermined); safety acetate (undetermined); safety (diacetate); safety (triacetate); safety (polyester); safety (mixed safety base, no nitrate); safety (unknown); paper; Other; unknown
Repeatable
N
Name
layerDetailRole
Label
Layer Detail - Role
Schema
AES 4.4.2.1.1.2.2.1.1.3 (role attribute of layerType)
Definition
The primary purpose the media layer serves in the overall media object, such as support layer, data layer, or protective layer.
Controlled Vocabulary
Film. Label layer; Protective layer; Recording layer; Support layer
Videotape. Label layer; Protective layer; Recording layer; Support layer
Videodisc. Label layer; Protective layer; Recording layer; Support layer
Audiotape, Optical disc, Analog disc, Cylinder. LABEL_LAYER; PROTECTIVE_LAYER; DATA_LAYER; PROTECTIVE_DATA_LAYER; SUPPORT_LAYER [source: AES]
Repeatable
N
Name
layerDetailOrder
Label
Layer Detail - Order
Schema
AES 4.4.2.1.1.2.2.1.1.4 (order attribute of layerType)
Definition
An integer indicating where the described media layer exists within the layered media object sandwich. Generally, layered media objects consist of either a mirrored layer structure, where a core exists in the center of the object with layers added to each side , or as a non-mirrored layer structure where a substrate or backing layer exists on one side of the object, with additional layers added in one direction only. In both cases the primary substrate layer shall be defined with an order of 0. All layers added on top of the substrate layer shall have their order incremented in steps of 1 according to the place within the overall layer sandwich that they occur. All layers beneath the primary substrate shall have their order decremented in steps of 1 according to the place within the overall layer sandwich that they occur.
Format
Integer
Repeatable
N




 
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