Open extend means that a disk file will be extended by the program.When a file is extended, records are added to the file after the last record in the file.
According to the ANS standards, a file opend in extend mode can't be created by teh program; the file must already exist (...a nulfile works....) so records can be added to it. The exception (there's always an exeption) is an optional file. But.. who uses optional files??
A VSAM sequential fil can be either created or extended when the file is opened in extend mode. But there's no need for an indexed file extended, because of the index.
Greetings,
M.
BigMag, The Netherlands.
bigmag@wanadoo.nl