Integration Information 
Demand Data Foundation (DDF) integrates with external systems to receive or send information about master data and time series.
Integration
DDF can receive data from and send data to an SAP ERP system or a legacy system. Note that DDF can receive data from more than one system.
Integration with SAP ERP System
The SAP ERP application sends information to DDF using the data replication framework (DRF, transaction DRFOUT). For more information, see the following sources:
Master Data Replication from SAP ERP to Demand Data Foundation
Common Master Guide for SAP Customer Activity Repository, SAP Assortment Planning for Retail, SAP Promotion Management for Retail, section Configuring Data Replication from SAP ERP to DDF. You can find this guide on the SAP Help Portal at
http://help.sap.com/car
Installation and Upgrade Information Master Guide 
.Administrator's Guide, Demand Data Foundation (DDF) with Unified Demand Forecast (UDF) on SAP HANA, section Introduction to Demand Data Foundation (DDF). You can find this guide on the SAP Help Portal at
http://help.sap.com/car Integration Information Administrator's Guide, Demand Data Foundation (DDF) with Unified Demand Forecast (UDF) on SAP HANA .
Integration with Legacy System
You can use this option when your system of record is not an SAP ERP application. For more information, see the Administrator's Guide, Demand Data Foundation (DDF) with Unified Demand Forecast (UDF) on SAP HANA, section Introduction to Demand Data Foundation (DDF). You can find this guide on the SAP Help Portal at http://help.sap.com/car Integration Information Administrator's Guide, Demand Data Foundation (DDF) with Unified Demand Forecast (UDF) on SAP HANA .
Features
Provides a unified data storage for applications using DDF.
Receives information through the following inbound interfaces:
Remote Function Call (RFC) communication
Extensible Markup Language (XML) message
Provides the following inbound interfaces for time series:
Generic
Model
Forecast
Sales
Store traffic
Provides the following inbound interfaces for master data:
Attributes
Images
Inventory
Location
Location Hierarchy
Offer
Placeholder Product
Product
Product Hierarchy
Product Location
Transportation Lane
Vendor
Vendor Fund
Provides the following outbound interfaces for master data:
Offer
Placeholder Product
Vendor Fund