I've noticed that sometimes, performing multiple graphics-manipulating actions in immediate succession can lead to irregularities in rendering.
The computer uses the programmer's description of the record While transferring a record from an input file to an output file we must read the record into the input record buffer, transfer it to the output record buffer and then write the data to the output file from the output record buffer.
The Record buffer for every file used in program is described in the FILE SECTION by making use of FD(File Descriptor) entry .
ISAM is included for historical reasons.) A significant way in which ISAM (and other nonsequential file organization methods) differs from sequential organization is that the record keys in an indexed file must be unique; this is a system requirement, not just a programming practice.
Consequently, an indexed file is typically a master file.
Also, there is a clear difference between updating a sequential file and updating an indexed file.
When you update a sequential file, you rewrite the entire file; this practice leaves the original file as a convenient backup in case the job must be rerun.
Every time I want to update in the database which I am getting some value from sequential file, so how can I update in database by using the webservices?
Please suggest me how to proceed; I am using the Datastage 8.5v .
When you update an indexed file, the system rewrites records in the file directly in place, thereby providing no automatic backup file.
To create a backup, you periodically copy the file onto another device.
This internal filename is assigned using the SELECT…ASSIGN clause.