Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.

Real-time systems are required to answer to external stimuli within a specified time-period. For this to be possible, the systems behaviour must be predictable. The use of active Databases in real-time systems introduces unpredictability in the system, e.g. due to their use of active rules. The behaviour in active Databases is usually specified in ECA-rules.