Land utilization vector data storage method based on main memory database Redis

A vector data and database technology, applied in the field of land use vector data storage based on in-memory database Redis, can solve the problems that in-memory database does not provide spatial data management module and spatial data efficiency is not high, so as to overcome inefficiency and improve management and efficiency. Query efficiency, eliminate the effect of I/O operations

Inactive Publication Date: 2014-12-03
ZHEJIANG UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to overcome the inefficiency of disk database management space data and the shortcomings such as the memory database does not pro

Method used

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  • Land utilization vector data storage method based on main memory database Redis
  • Land utilization vector data storage method based on main memory database Redis
  • Land utilization vector data storage method based on main memory database Redis

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Experimental program
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Embodiment

[0041] Establish a land use vector database, and the information metadata takes spatial database information as an example. Spatial database information storage Spatial database construction time and database description are stored in a hash type data structure, and its storage structure is shown in Table 4. Key is the name of the spatial database, Field is the name of the information to be stored, and Value is the value of the information to be stored.

[0042] Table 4

[0043]

[0044] The name of the spatial data set is unique and disordered, so this part of the information is stored in the collection type data structure, and its storage structure is shown in Table 5. Key is the name of the inter-dataset list, and Value is the name of all spatial datasets under this spatial database.

[0045] table 5

[0046]

[0047] According to different spatial objects, the spatial feature data of point and line elements adopt a unified storage format, and the spatial feature d...

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Abstract

The invention discloses a land utilization vector data storage method based on a main memory database Redis. According to the method, the main memory database Redis is adopted for storing land utilization vector data, a uniform storage structure for vector data of dot, line and plane is designed, and accordingly, the vector data are stored in the memory database. According to difference of space objects, storage formats are designed for spatial feature data of dot and line elements, and spatial feature data of the plane element comprise direct coordinate description and indirect coordinate description according to whether the boundary consists of line elements. The method has an important actual application value in the land utilization field, the condition of low efficiency caused by I/O expenditure when a conventional disk resident database is used for managing land utilization data can be changed, the land utilization vector data can be successively and directly stored in a memory, data can be efficiently managed and inquired, and the application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of GIS (Geographic Information System) vector data storage technology, in particular to a land use vector data storage method based on memory database Redis. Background technique [0002] Since the completion of the second national land survey on October 31, 2009, land change surveys have been conducted every year across the country, and the data of the current year are compared with the data of the previous year to generate incremental update data and make changes to the data of the previous year to maintain Current status of survey results. The Ministry of Land and Resources requires the management of the results of the second national land survey to be informatized and networked, to establish and improve the land survey system, statistical system and registration system, to realize the socialized service of land resource information, and to meet the needs of economic and social development. At present, m...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/29
Inventor 刘仁义张丰杜震洪戚将辉靳凤营
Owner ZHEJIANG UNIV
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