# Package org.apache.ode.scheduler.simple

- Interface Summary
  Interface | Description
  --- | ---
  DatabaseDelegate | Database abstraction; provides all database access for the simple scheduler.

- Class Summary
  Class | Description
  --- | ---
  JdbcDelegate | JDBC-based implementation of the `DatabaseDelegate` interface.
  SimpleScheduler | A reliable and relatively simple scheduler that uses a database to persist information about scheduled tasks.

- Exception Summary
  Exception | Description
  --- | ---
  DatabaseException | Exception class thrown by `DatabaseDelegate` implementations.
  JobNoLongerInDbException | Exception thrown if an attempt has been made to commit a job that is no longer in the database.