具体的例子没有做过，

Main Packages

ENG_Eco_PUB : This is the public PL/SQL package that is to be

programmatically called to launch the import. This package ensures that all

records belong to the same business object before it lets the business object

through to the Private package.

ENG_Eco_PVT : This is the private PL/SQL package. It performs all the

business logic by calling the Entity and Shared packages as and when required.

Shared Packages

ENG_Globals : This Global package contains all global structure and variable

definitions, as well as commonly used procedures and functions.

ENG_Validate : This is a shared validation package. This package contains all

attribute-level validation logic.

ENG_Value_to_ID : This is the shared Value-Id conversion package. This

package contains all Value-Id conversions.

Error_Handler : This is the shared error handling package. This package is

responsible for logging error messages and erroring out records.

Entity Packages

ENG_Validate_Eco: This package contains Attribute and Entity level validation

for the ECO Header.

ENG_Default_Eco: This package contains default attribute procedures for the

ECO Header.

ENG_Eco_Util: This package contains entity utility functions and procedures

for the ECO Header.

ENG_Validate_EcoRevision: This package contains Attribute and Entity level

validation for the ECO Revision.

ENG_Default_EcoRevision: This package contains default attribute procedures

for the ECO Revision.

ENG_EcoRevision_UTIL: This package contains entity utility functions and

procedures for the ECO Revision.

ENG_Validate_RevisedItem: This package contains Attribute and Entity level

validation for the Revised Item.

ENG_Default_RevisedItem: This package contains default attribute procedures

for the Revised Item.

ENG_RevisedItem_UTIL: This package contains entity utility functions and

procedures for the Revised Item.

BOM_Validate_RevisedComp: This package contains Attribute and Entity level

validation for the Revised Component.

BOM_Default_RevisedComp: This package contains default attribute

procedures for the Revised Component.

BOM_RevisedComp_UTIL: This package contains entity utility functions and

procedures for the RevisedComponent.

BOM_Validate_ReferenceDesig: This package contains Attribute and Entity

level validation for the Reference Designator.

BOM_Default_ReferenceDesig: This package contains default attribute

procedures for the Reference Designator.

BOM_ReferenceDesig_UTIL: This package contains entity utility functions and

procedures for the Reference Designator.

BOM_Validate_SubstituteComp: This package contains Attribute and Entity

level validation for the Substitute Component.

BOM_Default_SubstituteComp: This package contains default attribute

procedures for the Substitute Component.

BOM_SubstituteComp_UTIL: This package contains entity utility functions

and procedures for the Substitute Component.

在115mfgapi的第六章写的比较详细。