Determines whether or not table and index files are opened shareable
SET EXCLUSIVE ON | OFF | (<expL>)
If SET EXCLUSIVE is ON when a table and its associated index files are opened, then the table and index files cannot be by another user until they are closed. If SET EXCLUSIVE is OFF when a table and its associated index files are opened, then the table and index files are shareable by multiple users.
File and record locking to control concurrent updates to the table and index files is automatically enforced if EXCLUSIVE was OFF when the table was opened. The commands MODIFY STRUCTURE, PACK, REINDEX, INDEX ON (tags) and ZAP are the only commands that require a table to be opened exclusively. By default, EXCLUSIVE is ON.
// Close today’s payments procedure close_day set exclusive on set view to accounts if used() select payments set dcache to reccount() set dcache on seek dtos(date()) total on dtos(payment_date)+emp_no to (cdow(date)); while payment_date = date() seek dtos(date()) delete rest while payment_date = date() pack else dialog box "Cannot open payments exclusively." endif set exclusive off set view to payments return
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