Elements of incremental change

The following table describes product structure elements that may participate in an incremental change. Element Purpose Absolute occurrence A relationship between a parent assembly and an item one or more levels lower in the structure. The parent assembly is the context in which the absolute occurrence exists. You can define data on the absolute occurrence that overrides the data stored on the item when you select the context assembly and view the structure. Both relative occurrence data (notes and transforms) and attachments can be overridden with data on absolute occurrences. Each absolute occurrence can have one or more unique attribute values that distinguish it from the other absolute occurrence derived from the same single occurrence. Attachment A form, dataset, or folder related to an item revision. Baseline (Incremental change baseline.) A new revision of the parent assembly that has the occurrences and attachments as configured in Structure Manager when the incremental change baseline was created. There are no incremental changes and all unconfigured occurrences are removed. Change An individual change to a component (occurrence) or attachment. A change may be an add or a remove. Incremental change (IC) A collection object that contains the individual changes. An IC is modeled as an item of the EngChange type. You can release an incremental change and apply effectivity to it by attaching a release status. Incremental change (revisions) are configured by the revision rule, as are the components (occurrences) and attachments associated with the changes on the incremental change. You can revise incremental changes if required, in which case the changes are copied (this is not typically required). Intent A named object that represents an alternate solution. You can apply one or more intents to an incremental change to signify that the incremental change is valid for those intents. The user sets one or more intents in the revision rule that configures the incremental changes with those intents and, consequently, the associated changes. Intents are only available with incremental change, not with standard revision configuration. Occurrence (Sometimes called relative occurrence.) A hierarchical structure relationship between the immediate parent assembly and its child component item (in an imprecise assembly) or item revision (in a precise assembly). You can use a find number to identify for an occurrence, but this number may not be unique. Data can be stored on the occurrence, including occurrence notes and transforms.