Sequence Object

Each record in a repository needs a unique ID to identify it. These IDs are tracked via a sequence object (also called a sequence or sequence definition), which keeps track of the IDs that have been used in that repository. A sequence can be shared by multiple repositories, which would guarantee that each record has a unique id across all the repositories using that sequence. A use for this would be if products were being entered in multiple repositories but each product needed a unique product ID. Although a sequence definition can be shared by multiple repositories, it is recommended as best practice to create a separate sequence definition for each repository. The default sequence object is commonly used if the user doesn’t care what the sequence numbers are as long as they uniquely identify each record.