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