Developing Apama Applications > Developing Apama Applications in EPL > Defining Monitors > About service monitors
About service monitors
Of course, all monitors can be considered to be providing some kind of service. However, as mentioned earlier, it can be helpful to view the monitors that make up your application as either core processing monitors or service monitors. It is common for a single instance of a service monitor to provide data to a set of monitor instances spawned from a core processing monitor instance.
Apama provides a number of service monitors that fit this pattern. These service monitors provide support for the following:
*Dataview service — exposes read-only data to dashboards. This data comes from EPL and Java applications.
*Password service — supports retrieval of passwords from implementation-specific providers.
*Scenario service — provides support for all scenario-based applications.
In addition, there are a number of service monitors for use by adapters:
*ADBC adapter — provides event capture and playback in conjunction with Apama Studio’s Data Player. Also monitors Java database connectivity (JDBC) and open database connectivity (ODBC).
*IAF status manager — monitors connectivity with an adapter.
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