User guide

Data Integration with Sybase Avaki Studio 181
failover
The transition of control from a failing or unreachable primary grid domain controller to a secondary
grid domain controller.
federated data access
A scheme that allows independently controlled elements to be shared into a single namespace. Files,
user accounts, and other objects maintain their separate identities and remain under the control of
their owners, but—subject to access controls—the objects can be accessed, managed, and viewed as
if they were part of a single system.
GDC
See grid domain controller.
generated view
A file created by a view generator; it may contain data obtained from a database operation, a data
service, a file, or an HTTP source. Like other files, generated views exist in a local file system and are
shared into the data catalog.
grid
A heterogeneous group of networked resources that appears and functions as one operating environ-
ment. A data grid like the Avaki Enterprise Information Integration (EII) system provides secure,
shared access to data.
grid directory
See Avaki directory.
grid domain
See Avaki domain.
grid domain controller
(GDC) The first server in an Avaki domain is the grid domain controller. The GDC maintains a portion
of the Avaki domain’s namespace and provides authentication services. It can also run Avaki com-
mands, share data, and monitor other servers. (That is, the GDC functions as a grid server.) If the
domain is configured for failover, it has both a primary GDC and a secondary GDC; the secondary is
updated at regular intervals and takes over management of the domain if the primary fails. Any Avaki
shares managed by the primary are read-only on the secondary.