dimension_schema: 'dimension_schema' S3 class

In rolap: Obtaining Star Databases from Flat Tables

dimension_schema S3 class

Description

A dimension_schema object is created, we have to define its name and the set of attributes that make it up.

Usage

dimension_schema(
  name = NULL,
  attributes = NULL,
  scd_nk = NULL,
  scd_t0 = NULL,
  scd_t1 = NULL,
  scd_t2 = NULL,
  scd_t3 = NULL,
  scd_t6 = NULL,
  is_when = FALSE,
  ...
)

Arguments

name	A string, name of the dimension.
attributes	A vector of attribute names.
scd_nk	A vector of attribute names, scd natural key.
scd_t0	A vector of attribute names, scd T0 attributes.
scd_t1	A vector of attribute names, scd T1 attributes.
scd_t2	A vector of attribute names, scd T2 attributes.
scd_t3	A vector of attribute names, scd T3 attributes.
scd_t6	A vector of attribute names, scd T6 attributes.
is_when	A boolean, is when dimension.
...	When dimension configuration parameters.

Details

A dimension_schema object is part of a star_schema object, defines a dimension of the star schema.

Value

A dimension_schema object.

See Also

star_database

Other star schema definition functions: define_dimension(), define_facts(), fact_schema(), star_schema()

Examples

d <- dimension_schema(
  name = "when",
  attributes = c(
    "Week Ending Date",
    "WEEK",
    "Year"
  )
)

rolap documentation built on June 8, 2025, 10:23 a.m.