Hierarchy classification:

1. top of the aat hierarchies
2. Objects Facet
3. Visual and Verbal Communication (hierarchy name)
4. Information Forms (hierarchy name)
5. information forms (objects)
6. information artifacts
7. [information artifacts by physical form]
8. machine-readable artifacts

Additional parents:

1. top of the aat hierarchies
2. Objects Facet
3. Furnishings and Equipment
4. Tools and Equipment
5. equipment
6. equipment by process
7. data processing equipment
8. data processing media

Narrower term/s

• compact discs[+]
  • CD-ROMs
  • photo CDs
  • CD-Rs [+]
    • CD-RWs
• DVDs[+]
  • DVD-ROMs
• Blu-ray discs

Anotations

Scope note:

Data storage devices in disk form that use lasers to write and access data. The data may be stored in an analogue format such as a videodisc, or in a digital format such as a compact disk.