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Creating a Query-Based
Taxonomy Using a Folder Hierarchy 
You want to create a query-based taxonomy based on an existing folder hierarchy.
...
1. Create an index
You need to create an index before you can create a query-based taxonomy. You do this in the index administration iView in index administration (KM Admin ® Index Administration; see Creating an Index).
2. Assign data sources to the index
You now assign data sources to the newly created index in the same iView. You want to index these data sources and create a taxonomy for them (see Assigning Data Sources).
3. Copy an existing folder hierarchy
You want to base the taxonomy on an existing folder hierarchy. To do this, create a new taxonomy in the Index Administration iView (KM Admin ® Index-Administration), and copy the existing folder hierarchy into this taxonomy. You new taxonomy now has the same folder structure as the existing folder hierarchy (see Creating Taxonomies for an Index).
4. Define the categories of the taxonomy using search queries
For each folder in your folder hierarchy, you now define the categories of the query-based taxonomy using a search query. These queries define which documents are later classified into the categories. You define the queries in the Taxonomy Query Editor iView. (Content Manager ® Taxonomy Query Editor; see Defining Search Queries (Simple View)
When you have
created a query-based taxonomy, you can begin the query-based classification
of documents (See
Classifying
Documents).

Note that the paths specified for iViews are valid for the standard delivery of Knowledge Management (KM). The paths given can be different to the paths in your portal. This depends on your configuration.
Defining Search Queries (Simple View)
For more information on the functions of index administration, see help.sap.com/ep ® SAP Enterprise Portal Administration Guide ® Knowledge Management Platform ® System Administration ® System Configuration ® Index Administration.