METHODS AND SYSTEMS FOR QUERYING A TAG DATABASE

• US 20110099190A1
• Filed: 10/28/2009
• Published: 04/28/2011
• Est. Priority Date: 10/28/2009
• Status: Active Grant

• Current Assignee: SAP SE
• Original Assignee: SAP AG (SAP SE)
• Inventors: Kreibe, Martin
• Granted Patent: US 8,176,074 B2
• Time in Patent Office: Days
• US Class Current: 707/769
• CPC Class Codes: G06F 16/38 Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
• CPC Class Codes: G06F 16/83 Querying

Abstract

Methods and systems are provided for querying a tag database. The tag database is stored in a storage. An XML document including a database query is received. The database query is written in a query language supported by an agent of the tag database. The XML document is parsed to extract the database query from the XML document. The tag database is accessed to perform at least one or a read or write operation on the tag database, based on the database query.

Claims

1. A computer-implemented method for querying a tag database, comprising:

storing the tag database in a storage;

receiving an XML document including a database query written in a query language supported by an agent of the tag database;

parsing the XML document to extract the database query from the XML document; and

accessing, using a processor, the tag database to perform at least one of a read or write operation on the tag database, based on the database query.

2. The method of claim 1, further comprising:

storing time data in association with a tag in the tag database.

3. The method of claim 1, wherein the database query includes a request for a list of features supported by the agent.

4. The method of claim 1, wherein the database query includes a mask.

5. The method of claim 1, further comprising:

determining a size of a result of the database query; and

sending only a fragment of the result equal or smaller in size than a threshold size.

6. The method of claim 5, wherein the database query includes the threshold size.

7. The method of claim 1, further comprising:

displaying a result of the database query to a user using one of a current view, a historical view, and an interpolated view.

8. A system for querying a tag database, comprising:

a storage for storing the tag database; and

a processor for executing an agent for;

receiving an XML document including a database query written in a query language supported by the agent;

parsing the XML document to extract the database query from the XML document; and

accessing the tag database to perform at least one of a read or write operation on the tag database, based on the database query.

9. The system of claim 8, wherein the agent stores time data in association with a tag in the tag database.

10. The system of claim 8, wherein the database query includes a request for a list of features supported by the agent.

11. The system of claim 8, wherein the query includes a mask.

12. The system of claim 8, wherein the agent:

determines a size of a result of the database query; and

sends only a fragment of the result equal or smaller in size than a threshold size.

13. The system of claim 12, wherein the database query includes the threshold size.

14. The system of claim 8, further comprising:

a display for displaying a result of the database query to a user using one of a current view, a historical view, and an interpolated view.

15. A computer-readable storage medium including instructions executable by a processor for implementing a method for querying a tag database, the method comprising:

storing the tag database in a storage;

receiving an XML document including a database query written in a query language supported by an agent of the tag database;

parsing the XML document to extract the database query from the XML document; and

accessing, using the processor, the tag database to perform at least one of a read or write operation on the tag database, based on the database query.

16. The computer-readable storage medium of claim 15, wherein the method further includes:

storing time data in association with a tag in the tag database.

17. The computer-readable storage medium of claim 15, wherein the database query includes a request for a list of features supported by the agent.

18. The computer-readable storage medium of claim 15, wherein the query includes a mask.

19. The computer-readable storage medium of claim 15, wherein the method further includes:

determining a size of a result of the database query; and

sending only a fragment of the result equal or smaller in size than a threshold size.

20. The computer-readable storage medium of claim 15, wherein the database query includes the threshold size.