Table Data Scope

When running DML commands in multiplex, the visibility of the table rows differs for different table types.

There are three types of row visibility in multiplex:

Global scope – All connections on all servers can see the rows.
Server scope – All connections on a particular multiplex server can see the rows.
Connection scope – Only a single connection on a particular multiplex server can see the rows.

Multiplex table data scope
Table type	Data scope
IQ base	Global
IQ temporary	Connection
Global temporary table	Connection
SA catalog (table created IN SYSTEM)	Server
SA temporary (table created IN SYSTEM)	Connection

SAP Sybase IQ copies data in SA catalog tables on the coordinator node to the secondary node catalog store whenever a secondary node is synchronized. The data in catalog store tables is otherwise not related between secondary server and coordinator server instances. After synchronization, local SA table data on the secondary server is lost, because table data from the coordinator overwrites it.

Note: Because CIS proxy tables point to data on remote servers, the data scope is external. Data management for such tables is done by the remote server.