Makes a copy of a database in an intermediate, compressed form.  Use
 the RDO IMPORT statement on this export file to rebuild the Rdb/VMS
 database.

 Example:

    RDO>  EXPORT 'DEPT3:PERS' INTO 'DISK2:PERSONNEL.RBR'

Additional information available:

MoreFormatExample

 Use EXPORT and IMPORT to:

 You must have the Rdb/VMS READ privilege to the database relations to
 use the EXPORT statement.

  o  Restructure a Rdb/VMS single-file database into a multifile
     database
  o  Restructure a multifile database
  o  Migrate a database from one DSRI-compliant database management
     system to another
  o  Create a version-independent copy of the database for archiving
     purposes
  o  Create an empty target database that uses the same data
     definitions as a source database by copying the metadata, but not
     the data, to the target
  o  Change database and storage area characteristics that you cannot
     change with the CHANGE DATABASE statement


 The IMPORT and EXPORT statements are not intended for regular backups
 of the database.  For regular backups and restorations of Rdb/VMS
 databases, use the RMU/BACKUP and RMU/RESTORE commands.

 EXPORT ─> database-file-spec ─>typebox (I)typebox (N)typebox (T)typebox (O) ─> interchange-file-spec ─┐
 ┌─────────────────────────────────────────────────────────────┘
 └──┬──────────────────>───────────────────┬───────>
    └─>  
W
I
T
H ─────┬───> 
E
X
T
E
N
S
I
O
N
S ───────┤
                   ├───> 
N
O
E
X
T
E
N
S
I
O
N
S ─────┤
                   ├───> 
D
A
T
A ─────────────┤
                   └───> 
N
O
D
A
T
A ───────────┘

Additional information available:

WITH_EXTENSIONSWITH_DATA

database-file-specinterchange-file-spec

 The file specification for the database you want to back up.  Use
 either a full or partial file specification or a logical name.  If
 you use a simple file name, Rdb/VMS looks for the database in the
 current default directory.  If you do not specify a file type,
 Rdb/VMS uses RDB.

 The file specification for a file in which EXPORT places an
 intermediate version of the database.  Use either a full or partial
 file specification or a logical name.  If you use a simple file name,
 Rdb/VMS places the interchange file in the current default directory.
 The default file type is RBR.

 Specifies whether the exported format of the database is compatible
 with a pre-Version 3.0 Rdb/VMS database (WITH NOEXTENSIONS), or with
 an Rdb/VMS database created with Version 3.0 Rdb/VMS software or
 higher (WITH EXTENSIONS).  The default is WITH EXTENSIONS.  The WITH
 EXTENSIONS option also directs Rdb/VMS to preserve other parameters
 about the physical structure of the exported database.  Use WITH
 NOEXTENSIONS in the following situations:


  o  When you migrate a database to Rdb/ELN

  o  When you export a database that you plan to restore on
     pre-Version 3.0 Rdb/VMS software


 When you specify the WITH NOEXTENSIONS option, null flags for missing
 value fields are not backed up, therefore numeric missing values are
 replaced by zeros and character missing values are replaced by
 blanks.

 Note also that when you specify the WITH NOEXTENSIONS option,
 features of Version 3.0 and higher Rdb/VMS databases are not backed
 up.  Storage maps, triggers, and collating sequences, for example,
 are not backed up when you specify the WITH NOEXTENSIONS option.

 The WITH NOEXTENSIONS option is not compatible with CDD/Plus
 dictionary databases (CDD$DATABASE.RDB).  If you attempt to export a
 CDD$DATABASE.RDB database, RDO issues an error message stating that
 the NOEXTENSIONS option is not valid for CDD/Plus dictionary
 databases.

 Specifies whether the RBR file includes the data and metadata
 contained in the database (WITH DATA), or the metadata only (WITH
 NODATA).  The default is WITH DATA.

 When you specify the WITH NODATA option, the EXPORT statement copies
 metadata from the source database to an RBR file.  Use the IMPORT
 statement to generate an empty database whose metadata is identical
 to that of the source database.

 The WITH NODATA option is not compatible with CDD/Plus dictionary
 databases (CDD$DATABASE.RDB).  If you attempt to export a
 CDD$DATABASE.RDB database, RDO issues an error message stating that
 the NODATA option is not valid for CDD/Plus dictionary databases.

 Example 1

 The following example shows how to export a database to a disk file:


 RDO> EXPORT
 cont>  'DEPT3:PERSONNEL.RDB' INTO
 cont>  'EXPORT$DISK:[EXPORT]PERSONNEL.RBR'


 This statement creates an interchange file for the PERSONNEL database
 from the database file identified by DEPT3:PERSONNEL.RDB.  DEPT3 in
 this case is a logical name for the device and directory where the
 database is located.  The copy is stored on EXPORT$DISK in the
 directory [EXPORT].  By default, the database is exported WITH
 EXTENSIONS and WITH DATA.


 Example 2

 The following example shows how to export a database to a magnetic
 tape volume:


 $ INITIALIZE MUA0:
 _Label:  PERS
 $
 $ MOUNT MUA0:
 _Label:  PERS
 _Log name:
 $ RDO
 RDO> EXPORT 'DEPT3:PERSONNEL.RDB' INTO 'MUA0:PERSONNEL.RBR'


 This statement creates an intermediate copy of the database on the
 magnetic tape volume labeled PERS, mounted on device MUA0:.

 Example 3

 The following example shows how to use the EXPORT statement to
 migrate an Rdb/VMS multifile database to an Rdb/ELN system.


 RDO>  EXPORT 'MF_PERS.RDB' INTO 'ELN_PERS.RBR' WITH NOEXTENSIONS


 Because Rdb/ELN must see the the migrated database as a pre-V3.0
 database, you must use the NOEXTENSIONS option.

 Example 4

 The following example shows how to export the metadata in a database
 without its data:


 RDO> EXPORT
 cont>  'DEPT3:PERSONNEL.RDB' INTO
 cont>  'EXPORT$DISK:[EXPORT]PERSONNEL.RBR'
 cont>  WITH NODATA


 This statement creates an interchange file for the PERSONNEL database
 from the database file identified by DEPT3:PERSONNEL.RDB.  The WITH
 NODATA option specifies that the interchange file, PERSONNEL.RBR,
 contains only the metadata that defines the structure of
 PERSONNEL.RDB.