Documentation for individual data value

Behind the Vision of Britain web site is a true data library, a collection of individual statistics each with its own metadata to tell users what it means. These metadata also control how the system visualises statistical data through graphs and maps. This is what we know about the particular data value you selected:

Attribute	Value	Meaning
Identifier	5289853	This number locates the particular value within the data table; it is like an accession number in a conventional library.
Value	20	This is the data value itself.
Date(s) covered	1971	We store dates within a date object, which can hold anything from a simple year value, for a census, to a period defined by two calendar dates.
Administrative area covered	10234049	Greenwich LB
Meaning (DDS cell reference)		No DDI metadata is held for this value, so it will be used only in reconstructions of source tables.
Table in census reports	EW1971ECNL_M3	1971 Census of England and Wales, Economic activity County Leaflets, Table 3 , 'Industry and status by area of workplace and sex', for 'County, county boroughs, urban areas with populations of 50,000 or more, conurbation centres'
Column in census table	2	Column label from original table:   Females
Row in census table	38	Row label from original table:       219 Animal and poultry foods
Status	P	Public. Visible in both graphics and tables.
Precision	S10	From 10% sample
Created by	ind_1971_lg_t	This is the name of our script which inserted this data value into the main data table. For non-derived values, this is usually done by copying data values across from our more conventional GBHDB database, and the scripts are usually named after the table in GBHDB they copy data from.

This table lists, in its "value" column, a single row from our data table. The values are mostly identifiers and codes which are given meaning by our main sub-systems, and the "meaning" column reaches into these to tell you more.