FDDM - Natural System File for DDMs

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# FDDM - Natural System File for DDMs

This Natural profile parameter is used to specify five subparameters for the Natural system file for DDMs.

Possible settings | See FDDM Parameter Syntax.
Default setting | none |
Dynamic specification | yes |
Specification within session | no |

Notes:

1. If this system file is defined, all DDMs are stored on the specified path. DDMs stored in libraries will no longer be accessible from Natural. This is similar to Natural for z/OS, where all DDMs are stored in the system file `FDIC`.
2. If the FDDM system file is undefined (database-ID and file-number = 0), the DDMs are stored in the libraries as supplied before. The system file FDDM is displayed as an inactive environment.
3. For information on system files, refer to: System Files in the Natural Operations documentation.

#### FDDM Parameter Syntax

The parameter syntax is as follows:

FDDM=(database-ID,file-number,password,cipher-key,RO)

Where:

Syntax Element | Value | Explanation
--- | --- | ---
`database-ID` | `1 - 65535` | Database identification of the database in which the Natural system file for DDMs is located. Note Database ID `255` is reserved for logical system files, see Natural profile parameter `LFILE`.
`file-number` | `1 - 65535` | File number of the database file in which the Natural system file for DDMs is located.
`password` | 1 - 8 characters | The password is only required if the Natural user-program system file has been password-protected using the Adabas security feature. Note The password is reserved for future use; currently, it is ignored.
`cipher-key` | 1 - 8 numeric characters | The cipher key is only required if the Natural user-program system file has been ciphered using the Adabas security feature. Note The cipher key is reserved for future use; currently, it is ignored.
`RO` | - | Indicates that the Natural user-program system file is "read-only" and is only specified if modifications on the file are to be disabled.

#### Examples:

    FDDM=(22,5)
    FDDM=(22,5,,12345)
    FDDM=(22,5,,,RO)