Back to Top 12. Java Blend software allows you to customize which mapping rule is used for which field or relationship. You can specify whether a field or relationship is mapped or how a relationship should be mapped. Back to Top 13. Java Blend software defaults to pessimistic concurrency.
Optimistic concurrency is available as an option on a per-transaction basis.
Back to Top 14. Let's say Linda and Tony access the same record at the same time. Linda changes the customer's area code, and Tony changes the date the customer was last contacted. Java Blend software detects that the record was changed, and aborts the second transaction. However, with Java Blend software, you can also specify which fields are related in a record, say city and zip code.