COMPUTER PROGRAMS FOR DATA BASED FILE

Brand	Owner	Address	Description
MARK IX	ANSWER SYSTEMS, INC.	P. O. BOX 1452, 21050 VANOWEN ST. CANOGA PARK CA 91304	COMPUTER PROGRAMS FOR DATA-BASED FILE MANAGEMENT; COMPUTER PROGRAMS FOR NON-PROCEDURAL LANGUAGE COMPILING FOR ON-LINE APPLICATIONS; AND COMPUTER PROGRAMS FOR DEVELOPING BATCH APPLICATIONS ON PERSONAL COMPUTERS FOR UPLOADING TO MAINFRAME COMPUTERS; ALL SOLD WITH ACCOMPANYING INSTRUCTION MANUALS;Mark 9;THE LINING SHOWN IN THE DRAWING IS FEATURE OF THE MARK IS NOT INTENDED INDICATE COLOR.;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method and system for enhancing the availability of VSAM files is provided. According to one exemplary method performed by a batch program, a '1' file is accessible to the online regions during a business day and a '2' file is built with updated information. Online traffic is switched from the '1' file to the '2' file. The '1' file is then locked up to prevent access by other batch programs. The '1' file is then renamed to '3' to free up the '1' dataset name. The '3' file (which was the old '1' file before it was renamed) is opened and online traffic is switched from the '2' file to the '3' file. Next, the '2' file is locked up to similarly prevent access by other batch programs. The '2' file is then renamed to '1'. The '1' file (which is the original '2' file before it was renamed) is opened and online traffic is switched from the '3' file to the '1' file. Likewise, the '3' file is locked up to prevent any further access by other batch programs. Finally, the '3' file is renamed to '2' thereby making this file available for the batch process to build the '2' file with updated information during the next cycle.