The R:BASE default for concurrency control is COLUMN checking. That is, R:BASE does not alert a user to a possible conflict unless two users attempt to update the same column in the same row. The SET VERIFY ROW command checks all values in a row for possible conflicts.

Locks Topics

Using the SET ROWLOCKS Command to Lock Rows

Using SET LOCK to Set Exclusive Table Locks

Displaying Multi-User Locks

Clearing Buffers with the SET CLEAR Command

Other Multi-User Considerations

Multi-User Mode Topics

Introduction to Using R:BASE on a Network

Setting Up for Network Use

Sharing Network Resources

Setting the Multi-User Default

Concurrency Control

Resource Waiting

Schema Reading Mode with SET STATICDB

Locks