Metadata item keys atom ('keys')

Overview

The metadata item keys atom holds a list of the metadata keys that may be present in the metadata atom. This list is indexed starting with 1; 0 is a reserved index value. The metadata item keys atom is a full atom with an atom type of ‘keys’.

Note that:

• Indexes into the metadata item keys atom are 1-based (1…entry_count).

• Zero (0) is reserved and never used as an index.

• The structure of key_value depends upon the key namespace.

The following figure shows a typical metadata item keys atom.

[Image]

The following figure shows an example of a metadata item keys atom consisting of three keys: two from one key namespace and a third from another key namespace.

Topics

Data fields

• Size
• Type
• Version
• Flags
• Entry_count
• Key_size
• Key_namespace
• Key_value[Key_size-8]

See Also

Atoms

• Country list atom ('ctry')
• Language list atom ('lang')
• Metadata item list atom ('ilst')
• Metadata item atom
• Value atom
• Item information atom ('itif')
• Name atom ('name')
• Data atom ('data')