Added jdbc observations section

docs/modules/ROOT/pages/reference/db.adoc

@@ -3,12 +3,20 @@
 
 Micrometer can instrument various libraries that interact with databases
 
-* <<db-datasource, DataSource Instrumentation>>
+* <<db-datasource-observation, DataSource Observation Instrumentation>>
+* <<db-datasource, DataSource Metrics Instrumentation>>
 * <<db-jooq, jOOQ Instrumentation>>
 * <<db-postgres, PostgreSQL Instrumentation>>
 
+[[db-datasource-observation]]
+== DataSource Observation Instrumentation
+
+Through the https://github.com/jdbc-observations/datasource-micrometer[Datasource Micrometer] project you can instrument your `Datasource` to start producing https://docs.micrometer.io/micrometer/reference/observation.html[Observations] while interacting with the database. That means that depending on your Observation Handler setup you can plug in producing of metrics or distributed tracing.
+
+You can read more about Datasource Micrometer https://jdbc-observations.github.io/datasource-micrometer/docs/current/docs/html/[reference documentation] here.
+
 [[db-datasource]]
-== DataSource Instrumentation
+== DataSource Metrics Instrumentation
 
 [source,java,subs=+attributes]
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