Locking Attribute Locking (LCK) Purpose The level of locking for the database file. Valid Values NONE | RECORD | FILE • NONE offers the best performance, but is intended only for single-user environments. See Locking for details. • RECORD locks only the records affected by the statement. • FILE locks all of the records in the table. Default RECORD GUI tab Advanced tab[dBASE] Advanced tab [FoxPro]