Here is the loader file for loading new attachment usages for the Assets.
<?xml version="1.0" encoding="UTF-8"?>
<_config:DataloadBusinessObjectConfiguration
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.ibm.com/xmlns/prod/commerce/foundation/config ../../../../xml/config/xsd/wc-dataload-businessobject.xsd"
xmlns:_config="http://www.ibm.com/xmlns/prod/commerce/foundation/config">
<_config:DataLoader className="com.ibm.commerce.foundation.dataload.BusinessObjectLoader" >
<_config:DataReader className="com.ibm.commerce.foundation.dataload.datareader.CSVReader" firstLineIsHeader="true" useHeaderAsColumnName="true" >
</_config:DataReader>
<_config:BusinessObjectBuilder className="com.ibm.commerce.foundation.dataload.businessobjectbuilder.TableObjectBuilder" >
<_config:Table name="ATCHRLUS" deleteKey="Delete" deleteValue="1">
<_config:Column name="ATCHRLUS_ID" value="ATCHRLUS_ID" valueFrom="IDResolve">
<_config:IDResolve tableName="ATCHRLUS" generateNewKey="true" >
<_config:UniqueIndexColumn name="IDENTIFIER" value="Usage" />
</_config:IDResolve>
</_config:Column>
<_config:Column name="Identifier" value="Usage" />
</_config:Table>
<_config:Table name="ATCHRLUSDS" deleteKey="Delete" deleteValue="1">
<_config:Column name="ATCHRLUSDS_ID" value="ATCHRLUSDS_ID" valueFrom="IDResolve">
<_config:IDResolve tableName="ATCHRLUSDS" generateNewKey="true">
<_config:UniqueIndexColumn name="ATCHRLUS_ID" value="ATCHRLUS_ID" valueFrom="IDResolve" />
<_config:UniqueIndexColumn name="LANGUAGE_ID" value="langId" valueFrom="BusinessContext" />
</_config:IDResolve>
</_config:Column>
<_config:Column name="ATCHRLUS_ID" value="ATCHRLUS_ID" valueFrom="IDResolve" />
<_config:Column name="Name" value="Name" />
<_config:Column name="Language_Id" value="langId" valueFrom="BusinessContext" />
<_config:Column name="ShortDescription" value="ShortDescription" />
<_config:Column name="LongDescription" value="LongDescription" />
</_config:Table>
<_config:BusinessObjectMediator className="com.ibm.commerce.foundation.dataload.businessobjectmediator.TableObjectMediator" >
</_config:BusinessObjectMediator>
</_config:BusinessObjectBuilder>
</_config:DataLoader>
</_config:DataloadBusinessObjectConfiguration>
Sample CSV :
NewAttachmentUsage,,,,,
Usage,Name,langId,ShortDescription,LongDescription,Delete
ANGLE_IMAGE,Angle image,-1,Angle image,Angle image,0
If you don't want the first line of csv (NewAttachmentUsage,,,,,) to be a header you can remove firstLineIsHeader="true" in the loader file and start with the column names in the csv.
This will load the new attachment usages into ATCHRLUS and ATCHRLUSDS table.