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Row restrictions restrict the rows returned in a query by appending a SQL WHERE clause to every query a user runs. Multiple row restrictions are appended to the query with AND. New in XI is the ability to connect the restrictions with an OR. Row restrictions are useful for security purposes, but also for user productivity. They save users time by automatically filtering the data according to what they need to see. Companies that have complex security requirements may elect to implement row restrictions at the database level rather than through BusinessObjects.

In general, when you overload the ( ) operator, you define the parameters that you want to pass to that function. When you use the ( ) operator in your program, the arguments you specify are copied to those parameters. As always, the object that generates the call (Ob in this example) is pointed to by the this pointer. Here is an example of overloading ( ) relative to the three_d class. It creates a new three_d object whose coordinates are the sums of the calling object s coordinates and the values passed as arguments.

2:

a mse = Adjacent --

CPU usage at node 2 CPU 0: 70% CPU usage at node 2 CPU 1: 72% CPU CPU CPU CPU CPU usage usage usage usage usage at at at at at node node node node node 3 3 3 3 3 CPU CPU CPU CPU CPU 0: 1: 2: 3: 4: 70% 73% 76% 79% 82%

Figure 7.7 The CRC-4 multiframe structure, where bit 1 of the frame alignment word carries the four CRC remainder bits for sub-multiframes 1 and 2. The E-bits provide a far-end block error (FEBE) indication, flagging that the remote terminal has detected a CRC block error.