Next: List of Commands
Up: Table File System
Previous: Operations on Tables
Command Overview
In this section we include a short description of the table commands in
alphabetical order, (see the Detailed Command Description in Volume C of the MIDAS User Guide for a
more detailed explanation).
- Reference to tables
- is done by the filename. The extension .tbl
must be appended to the filename in commands which can work both
on images and tables (e.g.: READ/DESCRIPTOR table.tbl).
- Reference to columns
- can be done either by ``name'' or by
``number''. Columns are referred to by name as :label,
where label is a character string
(Note the starting colon `:' in front of `label'.)
The string (max. 16 characters, case insensitive) should start
with a letter and may contain alpha-numeric characters and
the underscore symbol.
Columns are referred by number as #n,
where n is the integer defining the column position.
- Access to rows
- can be done in two modes, ``sequential'' or
``direct''.
- Sequential access is defined by the row number as @n, where
n is an integer constant.
- Direct access is done through the values in the reference
column.
Next: List of Commands
Up: Table File System
Previous: Operations on Tables
Petra Nass
1999-06-09