Types of files supported by i5/OS DDM
i5/OS® DDM supports all iSeries™ file types when the target server is another iSeries server.
If the target server is not an iSeries server, the corresponding file types might be known by different names on that server. The following table shows the iSeries equivalents of non-iSeries files and DDM architecture files:
iSeries types Non-iSeries and DDM architecture types Non-keyed physical file Sequential (or direct) access file Keyed physical file Keyed access file Logical file Logical file The following list describes the considerations that apply to the types of files supported by an iSeries server.
- iSeries multiple-format logical files are not supported by DDM when the source or target server is neither an iSeries server nor a System/38™.
- For target physical (sequential or direct) files, if a record number is specified that is past the end of the file, the file is not extended and an error occurs.
- For target nondirect sequential files, the Clear Physical File Member (CLRPFM) command does not prepare a file member with deleted records.
- DDM files can be used as data files or source files by high-level language (HLL) programs. However, when a DDM file is used as a source file, the target server must be an iSeries server or a System/38 and the remote file associated with the DDM file must be defined on the target server as a source file. That is, the remote file must have been created on the target iSeries server or the target System/38 as FILETYPE(*SRC) by the Create Physical File (CRTPF) command or with FMTOPT(*CVTSRC) specified on the Copy File (CPYF) command.
Parent topic:
Access files with DDM
Related reference
Source file commands