Accessing files with DDM

These topics describe the types of files supported by the IBM® i operating system, when the DDM file and remote file must exist, and how to specify the names of remote files. Also included are examples and considerations for IBM i-to-IBM i and IBM i-to-System/36 file accessing.

Types of files supported by IBM i DDM
IBM i DDM supports all IBM i file types when the server system is another IBM i.
Existence of DDM file and remote file
A file on a server system cannot be accessed for any type of operation (such as open, read, write, or display) unless a DDM file associated with the remote file already exists on the client system.
Rules for specifying server system file names for DDM
The rules for specifying the name of a DDM file (on the local IBM i) are the same as for any other file type on an IBM i. The rules, however, for specifying the name of a remote file depend on the type of server system.
Examples: Accessing IBM i DDM remote files (IBM i-to-IBM i)
The examples show how access to a DDM file becomes an indirect reference (by using DDM) to the actual file on some other system. These examples are IBM i-to-IBM i examples.
Example: Accessing System/36 DDM remote files (IBM i-to-IBM i)
Of the command examples given in the previous topic (showing IBM i-to-IBM i examples), all except the first example can be coded the same way for accessing a file on a System/36.

Parent topic: Operating considerations for DDM