Levels

The Record vs. Records's Arrangement

Inheritance

Tree vs. Graph

Denormalisation

• Versioning / Provenance

TNA-CS13 / ISAD(G) has "Levels"

• ... of Arrangement???

7 Levels in Use at TNA (for physical records)

1. Department

2. Division (optional)

3. Series

4. Sub-series (optional)

5. Sub-sub-series (optional)

6. Piece

7. Item (optional*)

What is a Record?

What about:

• Sub-sub-series?

• Sub-series?

• Series?

• Division?

• Department?

ICA RiC says: RecordSet, Record, and RecordPart

Some (Meta)Data Elements are inherited downwards

• Specification - in TNA-CS13

• Implementation - Normalisation in ILDB

e.g. Immediate Source of Acquisition (ISoA)

• May be expressed at levels: Department, Division, Series, Sub-series, Sub-subseries, Piece

• Presentation: Start at level n, work upwards (n-1) until an entry for a level is found.

• Example, Item: AIR 28 2904/1

  • Department ISoA: "from 1960"

  • Series ISoA: ", from 1974"

  • NOTE: for presentation/understanding, Series level is used as it is the lowest-level
    (i.e. closest to the Item)

Are these properties about the Record or the Record Set?