AUDIT

This record type specifies an audit trace of how the data was processed. This ``family tree'' of the data is implemented as a vector of nodes, each of which represents a step in the history of the data. Each node refers to a dataset used in the creation of the current data object.

name

RECTYPE

I

is the record type code = 10

TREE

N*

contains the tree structure specifying the audit trail of the data object. Each node in the tree contains the four parts of the audit structure: the site identifier (Site IDs are centrally registered and are discussed in A.1.2,) the task identifier (Task codes are site-defined and are discussed in A.2.1,) the date of generation, and a relative pointer to the next lower node in the tree. The last (root) node must contain the identifiers and time stamp for the current data object and a NULL pointer. See Section 2.3.4 for details on this structure