VersionId meta-property is not supported (server) or used (client).

VersionId meta-property is supported (server) or used (client).

VersionId must be correct for updates (server) or will be specified (If-match header) for updates (client).

No support for conditional reads.

Conditional reads are supported, but only with the If-Modified-Since HTTP Header.

Conditional reads are supported, but only with the If-None-Match HTTP Header.

Conditional reads are supported, with both If-Modified-Since and If-None-Match HTTP Headers.

No support for conditional deletes.

Conditional deletes are supported, but only single resources at a time.

Conditional deletes are supported, and multiple resources can be deleted in a single interaction.

The server supports and populates Literal references (i.e. using Reference.reference) where they are known (this code does not guarantee that all references are literal; see 'enforced').

The server allows logical references (i.e. using Reference.identifier).

The server will attempt to resolve logical references to literal references - i.e. converting Reference.identifier to Reference.reference (if resolution fails, the server may still accept resources; see logical).

The server enforces that references have integrity - e.g. it ensures that references can always be resolved. This is typically the case for clinical record systems, but often not the case for middleware/proxy systems.

The server does not support references that point to other servers.