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Identity statement
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| Title |
1991
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| NDAD reference |
CRDA/71/DS/3 |
| Dates of creation of datasets |
1991 |
| Dates of contents of datasets |
1991 |
| Date of last input to datasets |
1991 |
| Date of last access to datasets |
1991 |
| Extent of datasets |
1 dataset: 0.46 MB after processing by NDAD; 1 table comprising 1081 records. |
| ISAD(G) level of description |
File |
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Administrative context
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| Aim and purpose |
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| Statement of responsibility |
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Source of acquisition
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| Source of acquisition |
The dataset was transferred to NDAD by The National Archives on a CD on 16 March 2006. |
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Nature and content
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| Scope and content |
The dataset is a record of conservation work carried out for the year 1991. For further information, see the Series catalogue.
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| Digital processing and conversion |
The dataset was received as a single Microsoft Excel spreadsheet. The data was exported in CSV format; the first record contained column headings and this was removed. The last 2 records comprised one blank line and one line with totals for the numeric data columns; these 2 records were also removed.
All DOS record delimiters were replaced with the Unix equivalent.
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Conditions of access and use
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| Access conditions |
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Allied materials
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| Related units of description |
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| Associated material |
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| Publications produced by the
originating department |
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| Publications produced by
researchers working on the datasets |
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Structure
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| Logical structure and schema |
The dataset comprises a single table. Field names were taken from the original MS Excel spreadsheet column headings, with any embedded spaces or other non-alphanumeric characters removed or replaced with underscores. Some column headings occurred more than once, and these were altered by adding numeric suffixes to differentiate them. Data types were assigned by inspection of the data.
In some cases the Excel column headings provided an adequate field description; in the remaining cases, descriptions were taken from the accompanying dataset documentation.
The dataset comprises the following table(s): | Table number | NDAD reference | Name | Title |
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| 1 | CRDA/71/DS/3/1 | INFO91 | 1991 |
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| How data was originally captured and validated |
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| Constraints on the reliability of
the data |
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Validation
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| Content validation |
Although no datatypes appear to have been explicitly defined in the original MS Excel spreadsheets by the original department, the data was checked against the datatypes inferred by NDAD, and against some datatypes assigned automatically by Excel.
The field pH, assigned the real number datatype, includes one record with the value 'p'.
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| Transformation validation |
The number of data records in the Excel spreadsheet was compared with the number of records in the exported data file, and was found to be consistent.
Some basic statistical operations (maximum, sum, mean) were carried out on randomly-selected numeric fields from the Excel spreadsheet; the same operations were carried out on the converted data file. No discrepancies were found.
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Links to related datasets
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| Related datasets |
| NDAD reference |
Title (link leads to Dataset Catalogue) |
| CRDA/71/DS/1 |
1978-1989
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| CRDA/71/DS/2 |
1990
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| CRDA/71/DS/4 |
1992
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| CRDA/71/DS/5 |
1993
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| CRDA/71/DS/6 |
1994
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| CRDA/71/DS/7 |
1995
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| CRDA/71/DS/8 |
1995-2003
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Last updated 2006-07-12 11:20:52
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Dataset details: CRDA/71/DS/3
