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!
! SDDL Name:    CGG4_ORDER.SDDL
!
! Purpose:      This SDDL file defines the CGG4_ORDER relation.
!
! Modification History:
!
!   Date       OPR      Who                       Reason
! --------   -------    ---   -------------------------------------------------
! 06/26/96    28182     Rose  Original implementation
!
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!
!

LANGUAGE        SQL

RECORD  ORDER_TYPE

!------------------------------------------------------------------------------
!
!   RECORD INFORMATION
!
!------------------------------------------------------------------------------

DESCRIPTION    "This relation is used in OPUS to define the order in which
		sections of keywords appear in a FITS header.

		The keywords are grouped in the cgg1_keyword relation by
		instrument and 'file_type'.  In fact the 'file_type' field
		has been used, historically, just to group keywords together.

		This relation specifies for each FITS header (for a particular
		instrument) which cgg1 keyword groups should be put in that
		header in which order."

!------------------------------------------------------------------------------
!
!   FIELD INFORMATION
!
!------------------------------------------------------------------------------


    FIELD  instrument
        TYPE            C3
        DESCRIPTION     "The name of the instrument: eg: NIC or STI"
    END_FIELD

    FIELD  header_type
        TYPE            C36
        DESCRIPTION     "The name of the FITS header. eg: NIC_SPT_PRIMARY"
    END_FIELD

    FIELD ftype_order
        TYPE            I2
        DESCRIPTION     "The order in which to put the following section"
    END_FIELD

    FIELD cgg1_instr
        TYPE            C3
        DESCRIPTION     "The cgg1_keyword relation instrument name.  This
			 can be the same as 'instrument' above, or another
			 name such as SSY or GEN."
    END_FIELD

    FIELD cgg1_ftype
        TYPE            C3
        DESCRIPTION     "The cgg1_keyword relation 'file_type' specification
			 for this section of keywords."
    END_FIELD

END_RECORD

!------------------------------------------------------------------------------
!
!   RELATION DECLARATION
!
!------------------------------------------------------------------------------


RELATION  cgg4_order

    TYPE             ORDER_TYPE

    DESCRIPTION      "Keyword section order"

    SUBSYSTEM_USING  "OPUS"

END_RELATION

!------------------------------------------------------------------------------
!
!   INSTANCE DECLARATION
!
!------------------------------------------------------------------------------


INSTANCE  cgg4_order

    GLOBAL

    TYPE        ORDER_TYPE

END_INSTANCE