Method and device for managing access to database files in multiple updated areas of navigation map

A technology for updating areas and navigating maps, applied in geographic information databases, electronic digital data processing, special data processing applications, etc., can solve problems such as unloading of files, failure of query operations, increase in system complexity, etc., and achieve the effect of efficient access

Active Publication Date: 2014-01-15
NAVINFO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application of the map with multiple update areas, due to the problem of database scheduling, the files used by the compiled query statement will be unloaded. If the user of the query statement cannot be notified in time, the query operation will fail. , and to establish such a notification mechanism will greatly increase the complexity of the system

Method used

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  • Method and device for managing access to database files in multiple updated areas of navigation map
  • Method and device for managing access to database files in multiple updated areas of navigation map
  • Method and device for managing access to database files in multiple updated areas of navigation map

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Embodiment Construction

[0018] The core idea of ​​the database file access management method for multiple update areas of the navigation map provided by the present invention is to uniformly manage database objects by adding a database access management unit in the navigation system. Register with the database access management unit, and the database access management unit assigns a fixed query request ID to the registered query request, and the navigation function module uses the query request ID for data access. In this way, each navigation function module does not need to consider details such as the name of the database file and the loading of the database file, and can access the data only by updating the area ID and query request ID.

[0019] According to one aspect of the present invention, there is provided a database file access management method for a plurality of update areas of a navigation map, the method includes the steps of: executing the query request for querying the database used by...

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Abstract

The invention provides a method and device for managing access to database files in multiple updated areas of a navigation map. The method includes the steps that query requests used by all navigation function modules for querying a database are registered in a database access management unit; query request IDs are allocated to the registered query requests by the database access management unit; all the navigation function modules have data access by using the query request IDs.

Description

technical field [0001] The invention relates to a database file access management method and device for multiple update areas of a navigation map, in particular to a navigation electronic map database access management method and device when there are multiple update areas in the navigation electronic map data. Background technique [0002] With the increasing amount of navigation electronic map data and users' higher and higher requirements on the timeliness of data update, the new navigation electronic map storage specification adds the feature of incremental data update. For example, an electronic map data was released in 2010, and the new data released in 2011 only provides an incremental update data, which only includes the part of the data that has changed compared to the map in 2010 and 2011. In this way, there is no need to provide the electronic map data of the whole country in 2011, so the data provided to the user is very small, and the user system only needs to m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
CPCG06F16/245G06F16/29
Inventor 刘泽林刘志毅
Owner NAVINFO
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