TD provides an own locking layer to be independent of the used database and to allow locks active cross multiple database transactions.

To understand the different aspects there are multiple interesting articles available.

• What is locking – Basics about locking in TradeDesign
• High level overview on locking in TradeDesign applications (e.g. DOKA)
• Implementation guidelines of locking for application rules
• Technical implementation of locking within TradeDesign