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English
  • MDM Registry Edition 10.5
  • All Products

Table of Contents

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  1. Preface
  2. Introduction
  3. Defining a System
  4. Flattening IDTs
  5. Link Tables
  6. Loading a System
  7. Persistent-ID (Dynamic Clustering)
  8. Cluster Governance
  9. Static Clustering
  10. Simple Search
  11. Search Performance
  12. Miscellaneous Issues
  13. Limitations
  14. Error Messages

Design Guide

Design Guide

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Merge Column Rule Definition

Merge Column Rule Definition

The Merge Column Rule Definition section begins with the
MERGE-COLUMN-RULE-DEFINITION
 keyword. You can use the following fields:
Field
Description
NAME=
A character string that defines the name of the Merge Column Rule Definition. It is a required parameter. A Merge name is limited to a maximum of 32 bytes.
COMMENT=
This is an optional text field that is used to describe the Merge Column Rule Definition’s purpose.
TYPE=
Type of Merge Column Rule. It is a required parameter. Use the following values:
from-master
Selects the value from the master record. If the selected record has a null value, the value from the next record is selected. If the selected record is the last record and has a null value, the null value is retained.
modal-exact
Selects the records that contain the modal (most common) value. The modal value is determined by a strict comparison.
most-data
Selects the records with the most data (longest sum of string lengths).
min
Selects the records with the lowest value in the current column.
max
Selects the records with the highest value in the current column.
sum
Selects a generated record with the sum of all values in the current column.
mean
Selects a generated record with the sum of all values in the current column.
other-column-equals
Selects the records where a different column equals a value. You must use the
TARGET-COLUMN
 and
VALUE
 parameters.
other-column-min
Selects the records where a different column contains the lowest value. You must use the
TARGET-COLUMN
 parameter.
other-column-max
Selects the records where a different column contains the greatest value. You must use the
TARGET-COLUMN
 parameter.
TARGET-COLUMN=
For rules that refer another column, this optional parameter specifies the IDT column.
VALUE=
For rules that require a value, this optional parameter specifies the value.
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