Methods, apparatuses and computer program products for converting a geographical database into a map tile database

一种数据库、地理的技术，应用在数据库领域，能够解决少量、不良性能等问题，达到好数据库性能、缓解瓦片尺寸权衡问题的效果

Inactive Publication Date: 2013-08-28
NOKIA TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, larger tiles generally require a smaller amount of disk space to hold the resulting index
For example, at zoom level 9, the disk space for a leaf inode is only about one megabyte (MB), but can result in poor performance for tile requests at zoom level 18, for example because queries against map data often A large number of records can be returned because in each zoom 9 tile contains 2 18 (more than 260,000 tiles) zoom 18 tiles

Method used

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  • Methods, apparatuses and computer program products for converting a geographical database into a map tile database
  • Methods, apparatuses and computer program products for converting a geographical database into a map tile database
  • Methods, apparatuses and computer program products for converting a geographical database into a map tile database

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Embodiment Construction

[0033] Certain embodiments of the inventions will now be described more fully hereinafter with reference to the accompanying drawings, in which some, but not all, embodiments of the inventions are shown. Indeed, various embodiments of the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. The same reference numbers refer to the same elements throughout. As used herein, the terms "data," "content," "information," and similar terms are used interchangeably to refer to data capable of being transmitted, received, and / or stored in accordance with embodiments of the present invention. Furthermore, the term "exemplary" as used herein is not provided to convey any qualitative assessment, but merely to convey an illustration of an example. Therefore, use of any such terms should not be taken to limit the spirit and scope of embodiments of the present invention.

[0034] Additionally, the term "circuit...

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Abstract

An apparatus for converting geographical geometrical content of a geographical database to map tiles may include a processor and a memory storing executable computer code that cause the apparatus to at least perform operations including modifying a geographical database based in part on adding items of data arranged in fields based on analyzing values corresponding to geometry information. The geometry information is associated with records of the geographical database. The computer program code may further cause the apparatus to determine a set of tiles at a predetermined zoom level including geographical information of respective records and may update the records to include data associated with minimum and maximum x and y values of the tiles.; The computer program code may further cause the apparatus to determine minimum and maximum x and y values that define a rectangular block(s) of map tiles. Corresponding computer program products and methods are also provided.

Description

technical field [0001] Embodiments of the present invention relate generally to database technology and more particularly to methods, apparatus, and computer program products for optimizing a geographic database to improve database performance for retrieval of location or map data by converting it into a map tile database . Background technique [0002] The present communication age has caused a huge expansion of wired and wireless networks. Computer networks, television networks, and telephone networks are experiencing an unprecedented technological expansion fueled by consumer demand. Wireless and mobile networking technologies have addressed related consumer demands while providing more flexibility and immediacy of information transfer. [0003] Current and future networking technologies continue to facilitate ease of information transfer and user convenience. Due to the now ubiquitous nature of electronic communication devices, people of all ages and education levels ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/29G06F3/048G06F16/23G06F16/245
Inventor T·伊瓦丘克瓦
Owner NOKIA TECH OY
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