18.8.142 RDF - table row definition segment (5.5.7)

The RDF segment defines the content of the row data segments (RDT) in the tabular response (RTB).

• As an optional segment in a query either a QBP or QBS, this segment can be used to limit the number of columns returned and to specify what column positions the fields occupy (where supported, these features can be used to override the defaults for the particular query). If omitted, all fields defined for the query are returned in their default column order.

• As a required segment in a tabular response (RTB) to either a QBP or QBS, this segment defines the contents of the table row data (RDT) segments that follows. It is not necessarily an echo back of the segment as it appeared in the query.

HL7 Attribute Table - RDF - Table Row Definition

• Segment (new)
  (base framework)
• Segment (new)
  (w/o profiles)
• Segment (new)
  (w/ profiles)
• Segment (classic)
  (w/ profiles)
• Segment (classic)
  (w/o profiles)
• FHIR
  Structure Definition
• v2.xml
  XSD

Base Framework
	Seq#	Data Element	Description	Flags	Implement	Cardinality	Length	C.LEN	Vocabulary	Data Type
RDF
	1	00701	Number of Columns per Row	= Truncation not allowed!	SHOULD	[1..1]		3		NM Numeric
	2	00702	Column Description		SHOULD	[1..*]			univ: DataTypes (CD)	RCD

	Seq#	Data Element	Description	Flags	Implement	Cardinality	Length	C.LEN	Vocabulary	Data Type
RDF
	1	00701	Number of Columns per Row	= Truncation not allowed!	SHALL	[1..1]		3		NM Numeric
	2	00702	Column Description		SHALL	[1..*]			univ: DataTypes (CD) hl7VS-dataTypes (VS) dataTypes (CS)	RCD

Base Framework											Base Standard Profile
	Seq#	Data Element	Description	Flags	Implement	Cardinality	Length	C.LEN	Vocabulary	Data Type	Implement	Vocabulary
RDF
	1	00701	Number of Columns per Row	= Truncation not allowed!	SHOULD	[1..1]		3		NM Numeric	SHALL
	2	00702	Column Description		SHOULD	[1..*]			univ: DataTypes (CD)	RCD	SHALL	hl7VS-dataTypes (VS) dataTypes (CS)

Base Framework											Base Standard Profile
	Seq#	Data Element	Description	Flags	Optionality	Repetition	Length	C.LEN	Table	Data Type	Optionality	Table
RDF
	1	00701	Number of Columns per Row		O			3=		NM Numeric	R
	2	00702	Column Description		O	Y			(0440)	RCD	R

	Seq#	Data Element	Description	Optionality	Repetition	Length	C.LEN	Table	Data Type
RDF
	1	00701	Number of Columns per Row	R			3=		NM Numeric
	2	00702	Column Description	R	Y			(0440)	RCD

18.8.142.1 RDF field definitions (5.5.7.0)

18.8.142.2 RDF-1 Number of Columns per Row (NM) 00701 (5.5.7.1)

Definition: This field specifies the number of data columns (and therefore the number of fields) contained within each row of returned data.

18.8.142.3 RDF-2 Column Description (RCD) 00702 (5.5.7.2)

Definition: Each repetition of this field consists of three components:

The segment field name that identifies the field occupying the column. The segment field name SHALL agree with the column name as it appears in the Query Profile. Use of the @ sign as prefix to the column name is optional.

• The 2 or 3 character HL7 data type, as defined in Chapter 2. Refer to HL7 Table 0440 - Data types in Chapter 2C, Code Tables, for valid values.

• The maximum width of the column, as dictated by the responding system. (This may vary from the HL7-defined maximum field length.)