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Tech Note: 4D Record Locking and ORDA Entity Locking
PRODUCT: 4D | VERSION: 17 R | PLATFORM: Mac & Win
Published On: December 28, 2018
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Record locking is an essential feature when handling a database with multiple users. Users can simultaneously add, modify, or remove records independently, and there must be a safety mechanism to prevent record conflicts. To prevent corrupted data, there are two types of locking mechanisms: optimistic and pessimistic locks. Both of these types will have advantages and disadvantages, but with the option to adhere to standard 4D locks and the newly added entity locks with ORDA, 4D developers will now have further control and customization on how to handle multi-user record access.

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