Taxonomy Concept

[Former Member]

Hi,

Taxonomy Table: A taxonomy table is a special knid of looku[p table.

It provides support for category-specific attributes that can be assigned to each category on a category-by-category basis.

A taxonomy contains attributes that are assigned to the leaf and non-leaf nodes.

A record can only be assigned to one leaf node(not multiple values as in hierarchies.).The taxonomy table itaself and the table fileds of each category are created and defined in the MDM Console.

The hierachy of categories and their associated category-specific attributes are created and manged using the MDM Data Manager in Taxonomy mode or via the Import Manager.

If an attribute can be applied to all main table records, you might consider defining it as a field.

In my MDM work, I included a Gender field as Taxonomy attribute for Taxonomy value Person in Category field of MDM main table record.

But it was better to use Gender as a main table field if all records comprises employee data.

Categorizing records enables you to isolate subsets of records for various organizing, searching, editing, and publishing purposes.

A taxonomy table in MDM stores a hierarchy of categories and subcategories and also supports record attributes, which are database subfields that apply to particular record categories, rather than to the entire collection of records.

Difference between Hierachy and Taxonomy Modes:

The main difference between Hierachy and Taxonomy modes is the fact that a taxonomy is a category with some additional features, which are the functional assigned attributes to the various nodes.

The attributes are used to classify and describe the products.

Attributes are inherited down the tree and give the user the ability to describe the product with general attributes high up in the tree, with more specific attributes down the branch.

Taxonomy Attribute Types: Texts:

Predefined list of values for entry, search, and compare.

Can be used for family partitioning (only if single-valued).

Image can be attached to every possible value.

Can be multi-valued.

Texts can be translated in installed languages.

Numeric: Real with dimensions/unit of measures.

Ratings: nominal, min, max, average, typical.

Can be multi-valued.

Coupled numeric:

Coupled numeric attributes are numeric attributes where two numeric vakues are required to describe the attribute, such as "horsepower @ rpm."

Acoupled numeric attribute appears as "name delimiter copupledname"(where "delimiter" is the user-defined, attribute-specific delimiter string for the attribute).

Coupled attributes are always multi-valued.

Common Attribute Properties:

Attribute Name must be unique.

A

[Former Member · Accepted solution]

Hi Kaushik,

Consider the structure of your main table as shown below

Fields:

Material No. Material Type Code Manufacturer MCode

100 DEIN 001 D100 120

200 FERT 002

300 HALB 003

400 DEIN 004 D100 120

In the above example Manufacturer and Mcode fields contains value only when Material Type = DEIN. Now if we create Manufacturer and MCode as part of main table and imagine lacs of records then records having Material Type other than DEIN will contain null value for Manufacturer and MCode fields.

Taxonomy helps us avoiding this situation.

Create a Material Type as Taxonomy field then all the material types DEIN, FERT and HALB will be the nodes and Manufacturer and MCode will become the attributes linked with DEIN hence whevever Material Type selected as DEIN then only fields Manufacturer and MCode appears and user can enter the value.

Also Taxonomy palys an important role in Print Publishing because Families table can be associated with only one Taxonomy table.

Regards,

Jitesh Talreja

[Former Member · Accepted solution]

Hi,

Taxonomy Table: A taxonomy table is a special knid of looku[p table.

It provides support for category-specific attributes that can be assigned to each category on a category-by-category basis.

A taxonomy contains attributes that are assigned to the leaf and non-leaf nodes. A record can only be assigned to one leaf node(not multiple values as in hierarchies.).

The taxonomy table itself and the table fields of each category are created and defined in the MDM Console.

The hierarchy of categories and their associated category-specific attributes are created and managed using the MDM Data Manager in Taxonomy mode or via the Import Manager.

If an attribute can be applied to all main table records, you might consider defining it as a field. In my MDM work, I included a Gender field as Taxonomy attribute for Taxonomy value Person in Category field of MDM main table record. But it was better to use Gender as a main table field if all records comprise employee data.

Categorizing records enables you to isolate subsets of records for various organizing, searching, editing, and publishing purposes.

A taxonomy table in MDM stores a hierarchy of categories and subcategories and also supports record attributes, which are database subfields that apply to particular record categories, rather than to the entire collection of records. Difference between Hierarchy and Taxonomy Modes:

The main difference between Hierarchy and Taxonomy modes is the fact that a taxonomy is a category with some additional features, which are the functional assigned attributes to the various nodes. The attributes are used to classify and describe the products.

Attributes are inherited down the tree and give the user the ability to describe the product with general attributes high up in the tree, with more specific attributes down the branch.

Taxonomy Attribute Types: Texts: Predefined list of values for entry, search, and compare. Can be used for family partitioning (only if single-valued).

Image can be attached to every possible value.

Can be multi-valued.

Texts can be translated in installed languages. Numeric: Real with dimensions/unit of measures. Ratings: nominal, min, max, average, typical. Can be multi-valued. Coupled numeric: Coupled numeric attributes are numeric attributes where two numeric values are required to describe the attribute, such as "horsepower @ rpm."

A coupled numeric attribute appears as "name delimiter copupledname"(where "delimiter" is the user-defined, attribute-specific delimiter string for the attribute). Coupled attributes are always multi-valued. Common Attribute Properties: Attribute Name must be unique.

Attribute Alias can be used in the find command: keyword search. Attribute Definition to provide a detailed description of the attribute available after publishing to paper or Web.

Multi-valued option defines whether the attribute can store multiple values. Numeric Attributes: Ratings Numeric attributes are those whose values come from a potentially continuous range of numeric values (with or without an associated physical dimension and unit of measure). "Socket size" is an example of an attribute that typically should be treated as numeric. Ratings: Nominal. Minimum. Maximum. Average. Typical. Numeric properties: Dimension. Default unit. Numeric Attributes: Decimals Numeric Properties: Decimal Places. Show Fractions. Coupled Numeric Attributes:

Coupled Numeric: Name Delimiter Options (same as Numeric) Dimensions Default unit. Decimal places. Show Fractions. A coupled numeric attribute appears as "name delimiter coupledname" (where "delimiter" is the user-defined, attribute-specific delimiter string for the attribute). Coupled attributes are always multi-valued.

Constraints: Records can only be assigned to one leaf node (not multiple values as in hierarchies). Only one taxonomy in the repository is considered by families. A taxonomy lookup table provides full validation against lookup table values and records, since all of the sub-table information is stored in the records of the lookup table. The relationship between main table records and taxonomy lookup table records is many-to-one(or perhaps many-to-few, if the lookup field is multi-valued).

Taxonomy Attributes: Attributes: Can be assigned to any level of the hierarchy, creating inheritance in child nodes (inheritance cannot be removed.). Inheritance in the child nodes is inherited automatically for attributes. Cannot be mandatory. Workaround: If the taxonomy assignment is mandatory, a validation group can check the value( but it is not valid for the Import Manager ).

Have no default value. Can rely on priority to change the display order of attributes in MDM Data Manager( additional settings MDM Data Manager under Configuration -> Options ) The Allow custom priorities option must be set to Yes for numbering priorities. Attribute Reassignments can be done.

Reassigning Attributes: Reassigning Attributes can be done but there is a warning message. Transferring Records between nodes:

You have to manually unlink the assignment from the first category to the new attribute category. Please tell me about Make Matching sets: Automatic relationships between objects based on common attribute values ( result only available within API calls )

I didnu2019t get the concept:

Taxonomy mode also provides powerful functionality that allows you to flexibly restructure the taxonomy of a fully populated repository so that you can continue to refine your taxonomy even after the repository contains detailed product information a large number of products.

Regards Kaushik Banerjee

[Former Member · Accepted solution]

Hi,

I just have posted the full post.

I was not getting the edit mode so, I posted it in reply.

Regards

Kaushik Banerjee

Edited by: Kaushik Banerjee on Oct 21, 2008 9:00 AM

[Former Member · Accepted solution]

Hi,

I think it is talking about Re-assignment of attributes and Moving records from one Category node to another Category Node.

The question is resolved.

Regards

Kaushik Banerjee

[Former Member · Accepted solution]

Hi Kaushik,

Yes your understanding is proper to some extent but if your records has value for this taxonomy field and attributes as well then you cannot modify the structure of taxonomy i.e. you cannot unlink the attributes or change the node in any respect. You need to first remove the value of taxonomy field and attributes from the records then only you can modify the structure.

But yes taxonomy is flexible in the sense you can add new nodes and attributes even your repository has lacs of records i.e. it is not necessary that your taxonomy is pre-loaded.

If your query is solved kindly mark the thread as Answered.

Regards,

Jitesh Talreja