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Method and system for storing various standard geological metadata

A metadata and metadata table technology, applied in the field of geoscience information storage, can solve problems such as performance that cannot meet the requirements, and achieve the effect of improving query efficiency

Inactive Publication Date: 2010-01-13
INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, using BLOB to store XML information will make it impossible to perform operations such as data search on the basis of the database.
If the XML document is loaded and parsed every time, and then retrieved, etc., the performance will not meet the requirements

Method used

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  • Method and system for storing various standard geological metadata
  • Method and system for storing various standard geological metadata
  • Method and system for storing various standard geological metadata

Examples

Experimental program
Comparison scheme
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[0148] The value of the namespace is selected from the URI (Uniform Resource Identifier, Uniform Resource Identifier) ​​related to the metadata. In this embodiment, the metadata is identified by adding the website address of the standard issuer and the English abbreviation of the metadata, such as the first standard example The namespace is: http: / / www.geodata.cn / metadata1, and the second standard example namespace is: http: / / www.geodata.cn / metadata2. The standard namespace needs to be reflected in the standard XSD structure, so the...

example 1

[0166] Metadata that meets the second standard example is,

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[0169] metadata2-01

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[0171] North China Plain

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[0175] The metadata of the above two different standards are serialized, stored and mapped to achieve indiscriminate storage.

[0176] For example, when a user searches for "North China Plain" (spatial range: 110E, 37N, 115E, 40N), metadata instance 1 and instance 2 can be retrieved, although they come from different metadata standards and represent their geographic information in different ways. Example 1 uses latitude and longitude ranges, and Example 2 uses geographic region names.

[0177] From each standard, determine the position of each key metadata item, which is the specific path information, and establish the mapping relationship between the key metadata item and the metadata table. In this embodiment, the metadata table is a mapping table, and each field in The mappi...

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PUM

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Abstract

The invention relates to a method and s system for storing various standard geological metadata. The method comprises the following steps: step 1: defining standard of each geological metadata in a XSD mode, determining the standard identification of each standard, uniquely identifying the metadata item of each standard according to the standard identification, and defining mapping rulers of a critical metadata information item and fields of a metadata table of each standard; step 2: uniformly expressing the metadata meeting different standards in a XML mode, and analyzing and verifying the metadata structure by a XML document object module method; and step 3: converting the metadata XML document object module into the XML text, adopting the BLOB field to store the metadata expressed in the XML text mode, and mapping the critical metadata information item to the metadata table according to the mapping rulers. The invention can achieve the purposes of information coexistence and standard coexistence of the geological metadata.

Description

technical field [0001] The invention relates to the field of earth science information storage, in particular to a method and system for storing various standard geoscience metadata. Background technique [0002] Geoscience data and various resources are not only of great significance to geoscience-related scientific research, but also a necessary basis for scientific research workers to carry out research work, and are also of great value to social and economic construction. However, since geoscience data and various resources are very different in terms of production process, form of expression, key content, and main use, and are scattered in different locations and owned by different organizations and individuals, there are huge impacts on the use and application. difficulty. Metadata is the basic way to solve this problem, which has been widely recognized at home and abroad and in all walks of life. However, there are huge differences in the content, structure and expr...

Claims

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Application Information

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IPC IPC(8): G06F17/30
Inventor 王卷乐冯敏诸云强宋佳朱华忠
Owner INST OF GEOGRAPHICAL SCI & NATURAL RESOURCE RES CAS
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