CA2253744A1 - Indexing databases for efficient relational querying - Google Patents
Indexing databases for efficient relational querying Download PDFInfo
- Publication number
- CA2253744A1 CA2253744A1 CA002253744A CA2253744A CA2253744A1 CA 2253744 A1 CA2253744 A1 CA 2253744A1 CA 002253744 A CA002253744 A CA 002253744A CA 2253744 A CA2253744 A CA 2253744A CA 2253744 A1 CA2253744 A1 CA 2253744A1
- Authority
- CA
- Canada
- Prior art keywords
- source data
- data
- file
- index files
- index
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/28—Databases characterised by their database models, e.g. relational or object models
- G06F16/284—Relational databases
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/22—Indexing; Data structures therefor; Storage structures
- G06F16/2228—Indexing structures
- G06F16/2237—Vectors, bitmaps or matrices
Abstract
A computer system for indexing databases for efficient relational querying. A set of index files is created to index an entire set of structured or semi-structured source data. The source data is tokenized. During the tokenization of the source data the source data is manipulated in accordance with the relational data base model. Tokens are generated in the index files to represent the table and the column in the source data for following value tokens. Index files are created to map into the position of data in the source file, and index files which represent the data as sorted lexicographically. The index files include a sort vector file and an associated join bit file. The system provides for efficient relational queries across the entire source data by use of the sort vector file, the join bit file, and related inverted files.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002253744A CA2253744C (en) | 1998-11-10 | 1998-11-10 | Indexing databases for efficient relational querying |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002253744A CA2253744C (en) | 1998-11-10 | 1998-11-10 | Indexing databases for efficient relational querying |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2253744A1 true CA2253744A1 (en) | 2000-05-10 |
CA2253744C CA2253744C (en) | 2004-08-24 |
Family
ID=29425632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002253744A Expired - Lifetime CA2253744C (en) | 1998-11-10 | 1998-11-10 | Indexing databases for efficient relational querying |
Country Status (1)
Country | Link |
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CA (1) | CA2253744C (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2409078A (en) * | 2001-02-26 | 2005-06-15 | Ori Software Dev Ltd | Encoding semi-structured data for efficient search and browsing |
GB2389690B (en) * | 2001-02-26 | 2005-09-07 | Ori Software Dev Ltd | Encoding semi-structured data for efficient search and browsing |
WO2013148853A1 (en) * | 2012-03-29 | 2013-10-03 | The Echo Nest Corporation | Real time mapping of user models to an inverted data index for retrieval, filtering and recommendation |
US9158754B2 (en) | 2012-03-29 | 2015-10-13 | The Echo Nest Corporation | Named entity extraction from a block of text |
US9406072B2 (en) | 2012-03-29 | 2016-08-02 | Spotify Ab | Demographic and media preference prediction using media content data analysis |
US9547679B2 (en) | 2012-03-29 | 2017-01-17 | Spotify Ab | Demographic and media preference prediction using media content data analysis |
US9798823B2 (en) | 2015-11-17 | 2017-10-24 | Spotify Ab | System, methods and computer products for determining affinity to a content creator |
CN110383263A (en) * | 2017-03-20 | 2019-10-25 | 国际商业机器公司 | The creation cognition intelligence inquiry from multiple data corpus |
-
1998
- 1998-11-10 CA CA002253744A patent/CA2253744C/en not_active Expired - Lifetime
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2409078A (en) * | 2001-02-26 | 2005-06-15 | Ori Software Dev Ltd | Encoding semi-structured data for efficient search and browsing |
GB2409078B (en) * | 2001-02-26 | 2005-09-07 | Ori Software Dev Ltd | Encoding semi-structured data for efficient search and browsing |
GB2389690B (en) * | 2001-02-26 | 2005-09-07 | Ori Software Dev Ltd | Encoding semi-structured data for efficient search and browsing |
US8065308B2 (en) | 2001-02-26 | 2011-11-22 | Ori Software Development Ltd. | Encoding semi-structured data for efficient search and browsing |
US8489597B2 (en) | 2001-02-26 | 2013-07-16 | Ori Software Development Ltd. | Encoding semi-structured data for efficient search and browsing |
US9158754B2 (en) | 2012-03-29 | 2015-10-13 | The Echo Nest Corporation | Named entity extraction from a block of text |
WO2013148853A1 (en) * | 2012-03-29 | 2013-10-03 | The Echo Nest Corporation | Real time mapping of user models to an inverted data index for retrieval, filtering and recommendation |
US9406072B2 (en) | 2012-03-29 | 2016-08-02 | Spotify Ab | Demographic and media preference prediction using media content data analysis |
US9547679B2 (en) | 2012-03-29 | 2017-01-17 | Spotify Ab | Demographic and media preference prediction using media content data analysis |
US9600466B2 (en) | 2012-03-29 | 2017-03-21 | Spotify Ab | Named entity extraction from a block of text |
US10002123B2 (en) | 2012-03-29 | 2018-06-19 | Spotify Ab | Named entity extraction from a block of text |
US10459904B2 (en) | 2012-03-29 | 2019-10-29 | Spotify Ab | Real time mapping of user models to an inverted data index for retrieval, filtering and recommendation |
US9798823B2 (en) | 2015-11-17 | 2017-10-24 | Spotify Ab | System, methods and computer products for determining affinity to a content creator |
US11210355B2 (en) | 2015-11-17 | 2021-12-28 | Spotify Ab | System, methods and computer products for determining affinity to a content creator |
CN110383263A (en) * | 2017-03-20 | 2019-10-25 | 国际商业机器公司 | The creation cognition intelligence inquiry from multiple data corpus |
Also Published As
Publication number | Publication date |
---|---|
CA2253744C (en) | 2004-08-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20181113 |