Many Easysoft Data Access (EDA) for ISAM users still use legacy applications to update and read their data. To make sure that EDA for ISAM does not lock these applications out or vice versa, Easysoft supports C-ISAM locking modes. Once the locking mode that mirrors your version of C-ISAM is chosen, EDA for ISAM and other applications can access the files concurrently. EDA for ISAM only takes an exclusive lock (and only ever at record level) at point of update. At all other times, EDA for ISAM opens the ISAM file read-only. This ensures that the data is freely available to all other applications.
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