Processing with cursors gives you the option of operating on
a multiple-row query result, one row at a time.
The query result is referred to as an active set.
You use a pointer called a cursor to move through the
active set, retrieving a
row at a time into host variables
and optionally updating or deleting the row.
Reporting applications may find this technique useful. Update
applications such as those that periodically operate on tables
not being concurrently accessed (for example, inventory adjustments)
may also find this technique useful.
This chapter presents:
Transaction Management for Cursor Operations
Sample Program Using Cursor Operations.
The emphasis in this chapter is on FETCHing one row at a time.
For an example of using the FETCH command with the BULK option, see
the BULK FETCH section of Chapter 7.
