When you run a Trillium Quality project, each process creates an output file. Depending on the size of your original source file and the complexity of your project, the resulting output files can take up a large amount of disk space. To conserve disk space, Trillium DQ provides two distinct options:
-
Piping data from process to process. When you pipe data, only the final output file is created. This is a good option if you have already validated each step, but not if you are still testing the project.
-
Compressing output data. When you compress data, Trillium creates an output file for each process but, because the data is compressed, the output files are significantly smaller. (The final output file is not compressed.) You can review individual output files in the same way that you would review non-compressed files.Note: In some instances, compressing Trillium Quality output files adversely affects performance.
Both piping and compression are enabled through the Control Center. This section describes the command line option that enables you to compress or expand an individual file.
The syntax of the compress command is:
tranfrmr -compress fileinreclen fileout
where filein is the name of the Trillium file that you want to compress, reclen is the length of the records in the input file, and fileout is the name you want to give to the compressed file. For example:
tranfrmr -compress tranfrmr04.dat 129 tranfrmr04.compress
The syntax of the expand command is:
tranfrmr -uncompress filein fileout
where filein is the name of the file you want to expand and fileout is the name of the expanded file. For example:
tranfrmr -uncompress tranfrmrZ_04.tsz transfrmrZ_04.expand