Architecture to enable search gateways as part of federated search

• US 20050192970A1
• Filed: 04/22/2005
• Published: 09/01/2005
• Est. Priority Date: 09/21/1999
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Yaung, Alan Tsu-I, Lee, Taejae, Vo, Mimi Phuong-Thao, Lin, Jy-Jine James, Summers, Robert Nelson, Huang, Mei-Ing W., Chou, Kehsing J., Soetarman, Basuki N., Tse, Siucheong Kenny
• Granted Patent: US 7,512,588 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 16/2471 Distributed queries
• CPC Class Codes: G06F 16/256 in federated or virtual databases
• CPC Class Codes: Y10S 707/99931 Database or file accessing
• CPC Class Codes: Y10S 707/99932 Access augmentation or optimizing
• CPC Class Codes: Y10S 707/99933 Query processing, i.e. searching
• CPC Class Codes: Y10S 707/99934 Query formulation, input preparation, or translation
• CPC Class Codes: Y10S 707/99935 Query augmenting and refining, e.g. inexact access
• CPC Class Codes: Y10S 707/99944 Object-oriented database structure

Abstract

An architecture to enable search gateways as part of a federated search supports searching for data in one or more heterogeneous data sources. The one or more heterogeneous data sources are within a computer system. Initially, a request for data is received at a federated data source. From the federated data source, data is retrieved from one or more of one or more terminal data repositories or one or more search gateway data sources.

Claims

1. A method of searching for data in heterogeneous data sources with a computer system, the method comprising:

receiving a request for data at a given federated data source; and

from the given federated data source, retrieving data from a plurality of datastores, including;

data from one or more terminal data repositories,

data, with a schema conceptual view of the data, from one or more other federated data sources, and

data, without a schema conceptual view of the data, from one or more search gateway data sources;

the given federated data source providing a unified schema conceptual view of;

(a) the data from the plurality of datastores, (b) the data from the terminal data repositories, and (c) the data and schema conceptual view from the other federated data sources.

2. The method of claim 1, wherein each search gateway data source searches for data in one or more other data sources.

3. The method of claim 1, wherein each federated data source, each terminal data repository, and each search gateway data source is represented by a data object.

4. The method of claim 3, wherein each data object is based on a class that inherits the properties of a base datastore class.

5. The method of claim 4, wherein each data object is manipulated via methods of the class on which the data object is based.

6. The method of claim 1, wherein retrieving data from one or more search gateway data sources comprises submitting a search gateway query from the given federated data source to each search gateway data source.

7. The method of claim 1, wherein each terminal data repository and each search gateway data source may be queried for data directly.

8. An apparatus for searching for data in one or more heterogeneous data sources, comprising:

a computer system accessing said one or more heterogeneous data sources; and

one or more computer programs, performed by the computer system, for;

receiving a request for data at a given federated data source; and

from the given federated data source, retrieving data from a plurality of datastores, including;

data from one or more terminal data repositories,

data, with a schema conceptual view of the data, from one or more other federated data sources, and

data, without a schema conceptual view of the data, from one or more search gateway data sources;

the given federated data source providing a unified schema conceptual view of;

(a) the data from the plurality of datastores, (b) the data from the terminal data repositories, and (c) the data and schema conceptual view from the other federated data sources

9. The apparatus of claim 8, wherein each search gateway data source searches for data in one or more other data sources.

10. The apparatus of claim 8, wherein each federated data source, each terminal data repository, and each search gateway data source is a data object.

11. The apparatus of claim 10, wherein each data object is based on a class that inherits the properties of a base datastore class.

12. The apparatus of claim 11, wherein each data object is manipulated via methods of the class on which the object data is based.

13. The apparatus of claim 8, wherein retrieving data from one or more search gateway data sources comprises submitting a search gateway query from the given federated data source to each search gateway data source.

14. The apparatus of claim 8, wherein each terminal data repository and each search gateway data source may be queried for data directly.

15. An article of manufacture comprising a program storage medium readable by a computer and embodying one or more instructions executable by the computer to perform method steps for searching for data in one or more heterogeneous data sources within a computer system, the method comprising:

receiving a request for data at a given federated data source; and

from the given federated data source, retrieving data from a plurality of datastores, including;

data from one or more terminal data repositories,

data, with a schema conceptual view of the data, from one or more other federated data sources, and

data, without a schema conceptual view of the data, from one or more search gateway data sources;

the given federated data source providing a unified schema conceptual view of;

(a) the data from the plurality of datastores, (b) the data from the terminal data repositories, and (c) the data and schema conceptual view from the other federated data sources

16. The article of manufacture of claim 15, wherein each search gateway data source searches for data in one or more other data sources.

17. The article of manufacture of claim 15, wherein the federated data source, each terminal data repository, and each search gateway data source is represented by a data object.

18. The article of manufacture of claim 17, wherein each data object is based on a class that inherits the properties of a base datastore class.

19. The article of manufacture of claim 18, wherein each data object is manipulated via methods of the class on which the data object is based.

20. The article of manufacture of claim 15, wherein retrieving data from one or more search gateway data sources comprises submitting a search gateway query from the given federated data source to each search gateway data source.

21. The article of manufacture of claim 15, wherein each terminal data repository and each search gateway data source may be queried for data directly.