Geoshare Data Model, Version 13.0

217-NULL-VALUE


Description    Attributes    Comments    References   

Description

There are a number of attributes for instances of this object type, one per datatype for which an absent value is needed. Such an object is always associated with another Geoshare object for which absent values are needed.


Description    Attributes    Comments    References   

Attributes

Label
Restrictions
Comments
Optionality
Units
NULL-FLOAT C=1, R=FSINGL 1
NULL-DOUBLE C=1, R=FDOUBL 2
NULL-SIGNED-INTEGER C=1, R=SLONG 3
NULL-UNSIGNED-INTEGER C=1, R=ULONG 4

Description    Attributes    Comments    References   

Comments

  1. NULL-FLOAT   C=1, R=FSINGL      
          

    Gives value to use for null values whose repcode is FSINGL, single-precision floating point values.

  2. NULL-DOUBLE   C=1, R=FDOUBL      
          

    Null value for FDOUBL, double-precision floats.

  3. NULL-SIGNED-INTEGER   C=1, R=SLONG      
          

    Null value for signed integer of any size.

  4. NULL-UNSIGNED-INTEGER   C=1, R=ULONG      
          

    Null value for unsigned integer of any size.


Description    Attributes    Comments    References   

References


Geoshare Data Model, Version 13.0

Send questions and comments to Jim.Theriot@POSC.org
Copyright © 2002, 03 Petrotechnical Open Software Corporation. All rights reserved.
This file is made available under the POSC Product License Agreement, which may be found at http://www.posc.org/about/license.shtml (on the POSC web site under 'About Us' > 'License Agreement').
POSC ®, the POSC logo ® and Epicentre ® are registered trademarks of Petrotechnical Open Software Corporation.
Copyright © 2001 Geoshare Users Group.

Petrotechnical Open Software Corporation POSC Geoshare SIG Valid XHTML 1.0! Valid CSS!