[Info-vax] HP wins Oracle Itanium case

[Michael Kraemer]

JF Mezei schrieb:

> 
> With Unix, it is all or nothing.  You either deal with a sequential file
> which you read into memory and fully rewrite to disk whenever a change
> is made, or you go with an SQL based system.
> 
> RMS (and VSAM on MVS) allows a middleground where you can update single
> recordds easily, add and delete records witout having to rewrite the
> whole file.  And it does provide for data sharing since record locking
> is available.

With lseek() and mmap() you can implement most, if not all of the above.
And there's record locking in Unix as well.
Istr that at least AIX even supports VSAM (but am not sure).