Get NASIS Table Metadata (Table and Column Descriptions)

Retrieve a table containing table and column names with descriptions, help text, units of measure, etc. from NASIS 7 metadata tables.

Usage

get_NASIS_table_metadata(
  table = NULL,
  column = NULL,
  what.table = "TablePhysicalName",
  what.column = "ColumnPhysicalName",
  query_string = FALSE,
  dsn = NULL
)

Arguments

table

Character vector of table identifiers to match. Default NULL for "all tables" (no constraint)

column

Character vector of column identifiers to match. Default NULL for "all columns" (in selected tables, if any, otherwise no constraint)

what.table

Column to match table against. Default: TablePhysicalName.

what.column

Column to match column against. Default: ColumnPhysicalName.

query_string

Default: FALSE; if TRUE return a character containing query that would be sent to NASIS.

dsn

Optional: path to local SQLite database containing NASIS table structure; default: NULL

Value

a data.frame

Details

These data are derived from the MetadataTable and MetadataTableColumn tables and describe the expected contents of standard NASIS tables and columns.

For NASIS choice lists based on domain and column names see get_NASIS_metadata() and NASISChoiceList(). This function (get_NASIS_table_metadata()) is intended for higher-level description of the expected contents of a NASIS database instance, rather than the codes/specific values used within columns.

See also

get_NASIS_metadata() NASISChoiceList() uncode() code()

Examples

if (local_NASIS_defined())
 str(get_NASIS_table_metadata())