# Hierarchy For Package org.apache.torque

Package Hierarchies:

- All Packages

## Class Hierarchy

- java.lang.Object
  - org.apache.torque.ColumnImpl (implements org.apache.torque.Column, java.io.Serializable)
  - org.apache.torque.Database
  - java.lang.Throwable (implements java.io.Serializable)
    - java.lang.Exception
      - java.lang.RuntimeException
        - org.apache.torque.TorqueRuntimeException
      - java.sql.SQLException (implements java.lang.Iterable<T>)
        - org.apache.torque.TorqueException
          - org.apache.torque.ConstraintViolationException
          - org.apache.torque.DeadlockException
          - org.apache.torque.NoRowsException
          - org.apache.torque.OptimisticLockingFailedException
          - org.apache.torque.TooManyRowsException
  - org.apache.torque.Torque
  - org.apache.torque.TorqueInstance

## Interface Hierarchy

- org.apache.torque.Column