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True if the lock was performed,False if a problem occurred (the file is already locked for example). HError is used to identify the error.
Name of data file used. If this name is not specified, HLockFile will use the last data file used by the last HFSQL management function (function starting with "H").
Used to define the type of lock performed on the data file:hLockWrite(default value)Lock in write mode: the records found in the data file can be read by another application but cannot be modified by another application. No lock on the data file can be defined by another application.hLockReadWriteLock in read/write: the records found in the data file cannot be read or modified by another application. No lock on the data file can be defined by another application.hLockNoNo effect <Lock> is ignored.
The management of locks is performed on the HFSQL Client/Server data files only.
Modifying the type of lock for a data file
Effect of lock mode
Last update: 09/17/2020
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