In
addition to the usual directory and file content, additional security-related
information is stored in the host for metadata-bound data.
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z/OS Specifics: On
z/OS, the security information for a UNIX file system (UFS) library
is stored as described above. However, the security information for
a z/OS direct-access bound library is instead stored within the bound
library data set itself. For this reason, z/OS sites that choose to
use metadata-bound libraries might prefer the z/OS direct-access bound
library implementation to the UFS library implementation. z/OS sequential-access
bound libraries cannot be bound to metadata.
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For a physical table, the security information consists of information in the header.
The corresponding metadata object is called a
secured table object.
The security information
includes the following:
-
an indication that access to the physical data must be authorized by the
metadata server
-
a record of the metadata location
of the metadata objects that correspond to the physical data
The security-related
information itself is host protected.