Basic database file operations in programs

Your program can perform read, update, write, and delete operations on database files.

Setting a position in the file
After a file is opened by a job, the system maintains a position in the file for that job. The file position is used in processing the file.
Reading database records
The system provides various ways to read database records.
Updating database records
The update operation allows you to change an existing database record in a logical or physical file.
Adding database records
The write operation allows you to add a record to a physical file member.
Deleting database records
The delete operation allows you to delete an existing database record.

Parent topic: Processing database files