US 9,542,469 B2Granted

Data warehouse data model adapters

AssigneeInternational Business Machines Corporation

InventorsVishal Singh Batra, Manish Anand Bhide, Mukesh Kumar Mohania, Sumit Negi

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Abstract

In the context of data administration in enterprises, an effective manner of providing a central data warehouse, particularly via employing a tool that helps by analyzing existing data and reports from different business units. In accordance with at least one embodiment of the invention, such a tool analyzes the data model of an enterprise and proposes alternatives for building a new data warehouse. The tool, in accordance with at least one embodiment of the invention, models the problem of identifying fact/dimension attributes of a warehouse model as a graph cut on a Dependency Analysis Graph (DAG). The DAG is built using existing data models and the report generation scripts. The tool also uses the DAG for generation of ETL (Extract, Transform Load) scripts that can be used to populate the newly proposed data warehouse from data present in the existing schemas.

Claims23

Dependent claims

A method comprising utilizing at least one processor to execute computer code that performs the steps of:

analyzing base table scripts which generate a plurality of reports from preexisting base tables;
and
developing a schema for a new data warehouse with merged data from the preexisting base tables and the schema configured for singly generating reports relating to the merged data, said developing comprising:
forming a fact table in the new data warehouse, wherein the forming a fact table comprises identifying a set of fact attributes, from the plurality of reports generated, wherein the set of fact attributes comprises attributes on which an aggregate operation is defined and attributes referenced in at least one of the plurality of reports generated;
forming dimensions in the new data warehouse, wherein the forming dimensions comprises forming a candidate table set by identifying a set of preexisting base tables which include at least one candidate attribute, wherein the at least one candidate attribute comprises an attribute that is contained within a group-by clause within the plurality of reports;
and
generating warehouse scripts for populating the formed fact table and the formed dimensions for the new data warehouse with data from the preexisting base tables.

4 more elements

A computer program product comprising:

a non-transitory computer readable storage medium having computer readable program code embodied therewith, the computer readable program code comprising:
computer readable program code configured to analyze scripts which generate a plurality of reports from preexisting base tables;
and
computer readable program code configured to develop a schema for a new data warehouse with merged data from the preexisting base tables and the schema configured for singly generating reports relating to the merged data, via:
forming a fact table in the new data warehouse, wherein the forming a fact table comprises identifying a set of fact attributes, from the plurality of reports generated, wherein the set of fact attributes comprises attributes on which an aggregate operation is defined and attributes referenced in at least one of the plurality of reports generated;
forming dimensions in the new data warehouse, wherein the forming dimensions comprises forming a candidate table set by identifying a set of preexisting base tables which include at least one candidate attribute, wherein the at least one candidate attribute comprises an attribute that is contained within a group-by clause within the plurality of reports;
and
generating scripts for populating the formed fact table and the formed dimensions for the new data warehouse with data from the preexisting base tables.

5 more elements

Dependencies are inferred from the claim text.