<?xml version="1.0" encoding="utf-8"?>
<ManualTopic ID="/baanerp/performance/tc/P000007_odm" xml:lang="en">
   <Header>
      <Title>Object Data Management</Title>
      <Keyword type="header" order="d1e1090825">
         <Level1>Valid for LN FP0, FP1, FP2, FP3, FP4, FP5, FP6, 10, 10.2</Level1>
         <Level2>Object Data Management</Level2>
      </Keyword>
      <Keyword type="header" order="d1e1090830">
         <Level1>Effect on CPU</Level1>
         <Level2>Object Data Management</Level2>
      </Keyword>
   </Header>
   <GeneralSection>
      <Paragraph>To link files to objects such as items, sales orders, or BOMs,
		use Object Data Management (ODM) files. At several places in LN, the linked files
		are automatically available for related objects, such as a production order.
		There are two ways to do this:</Paragraph>
      <List>
         <ListItemHead>Direct link</ListItemHead>
         <ListItem>If a file is linked to an object, such as an item, and a 'hard
		  table reference' exists between another object, such as a production order and
		  the item, the file linked to the item is also available on the production order
		  by the item reference. This does not cost any performance.</ListItem>
         <ListItemHead>Copied link</ListItemHead>
         <ListItem>If a file is linked to an object, such as a BOM, and no 'hard
		  table reference' exists between another object, such as a production order and
		  the BOM, often the link is copied to the next object, that is, from the BOM to
		  the production order. This makes performance worse.</ListItem>
      </List>
      <Paragraph>From a performance point of view, it is best to use a direct
		link. So, in case of the example, it is better to link a file to the item than
		to the BOM.</Paragraph>
      <Paragraph>
         <HTML:IMG xmlns:HTML="http://www.w3.org/TR/REC-html40" height="382" width="790"
                   SRC="../images/tr_tc_p000007_odm.gif"
                   alt="[...]"/>
      </Paragraph>
      <GeneralSection>
         <SectionTitle>Performance aspects</SectionTitle>
         <List>
            <ListItem>Effect on CPU: Yes</ListItem>
            <ListItem>Effect on database growth: Not applicable</ListItem>
         </List>
      </GeneralSection>
   </GeneralSection>
</ManualTopic>