Updating sequential file using java online dating questions for men
This internal filename is assigned using the SELECT…ASSIGN clause.
The internal file name (This name is not actual name of file.
In the comment above the call to the Random Access File constructor, it says that it opens the file for both reading and writing.
That confused me because the call to the constructor only had "r" in the second argument instead of "rw".
This page discusses the details of reading, writing, creating, and opening files.
There are a wide array of file I/O methods to choose from.
The Record buffer for every file used in program is described in the FILE SECTION by making use of FD(File Descriptor) entry .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.The flexibility of indexed sequential access method is realized at some cost in both storage space and accessing time.ISAM initially stores records sequentially and permits both sequential and random processing.