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Method and device for establishing inverse time-space four-dimensional data model

A data model, space-time technology, applied in the computer field, can solve the problems of high-efficiency reading and writing, high scalability and availability of massive data that cannot meet the needs of high concurrent reading and writing, and achieve high reading and writing efficiency and scalability, and high concurrent reading and writing effect of demand

Active Publication Date: 2013-12-04
SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems in the prior art that the relational database model cannot meet the requirements of high concurrent reading and writing, high-efficiency reading and writing of massive data, and high scalability and availability when storing spatio-temporal data in a relational database model, the embodiment of the present invention provides a method for establishing a reverse spatio-temporal A way to think about data models

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  • Method and device for establishing inverse time-space four-dimensional data model
  • Method and device for establishing inverse time-space four-dimensional data model
  • Method and device for establishing inverse time-space four-dimensional data model

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Embodiment 1

[0041] relational database such as figure 1 As shown, storing information in the form of relational tables provides a powerful method for information query, and most spatio-temporal data models are also stored in this way. It just increases the dimension of the relationship, that is, establishes the time axis and the space axis. But it is still to increase the number of columns in the inherent relational table to store the spatio-temporal data model. That is: the database or data model is static, and information records must conform to the format of the data model before they can be stored.

[0042] With the development of information technology, current users are more personalized, and some necessary technologies of relational databases are not so important. for example:

[0043] 1) Transaction consistency: Relational databases have a lot of overhead in maintaining the consistency of things, but now many spatio-temporal systems do not have high consistency in reading and w...

Embodiment 2

[0074] Embodiment 2 of the present invention provides a device for establishing a reverse spatiotemporal thinking data model, such as Figure 5 As shown, the device includes:

[0075] The establishment module 501 is used to establish a spatio-temporal four-dimensional coordinate system with the position of the observation point as a dot, and attribute dimension (A), time dimension (T), and two-dimensional space (X, Y) as four-dimensional information respectively.

[0076] Specifically, the establishment module 501 is specifically used to take the observation point as the target point, the attribute dimension (A) records all attribute information, the time dimension (T) records time information, the movement direction of the observation point is the X axis, and the movement The normal direction of the trajectory is the Y axis.

[0077] The transformation module 502 is used to obtain the original coordinate value (X', Y') of the observation point in the relational database coor...

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Abstract

The invention discloses a method and a device for establishing an inverse time-space four-dimensional data model. The method comprises the following steps: establishing a time-space four-dimensional coordinate system by taking an observation point as an original point and taking an attribute dimension (A), a time dimension (T) and a two-dimensional space (X, Y) as four-dimensional information respectively; acquiring original coordinate values (X', Y') of the observation point in a relation database coordinate system from a relation database, and converting the original coordinate values (X', Y') into a coordinate point P (A, T, X, Y) which is consistent with the time-space four-dimensional coordinate system; recording the change of data information of the observation point P (A, T, X, Y) by taking a two-dimensional table structure; when a plurality of observation points form a point group, recording data information of the point group by adopting a non-relational way. The device comprises an establishing module, a conversion module and a recording module. According to the method, the inverse time-space thought data coordinate system is established, and a way for matching the database with data information is adopted, so that the demands of highly concurrent reading and writing, efficient reading and writing of mass data, high expandability and high usability are met.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for establishing a reverse space-time four-dimensional data model. Background technique [0002] Most of the existing databases are relational databases, which store the attribute information of the data and call them through query statements. Since the early 1990s, based on the research results of spatial database and temporal database, some scholars have proposed the concept of spatio-temporal database, seeking to describe and process the movement behavior of objects in nature by combining space-time. quickly became a research hotspot. [0003] Spatio-temporal databases can query objects located in a specific spatial region within a specific time period. For example, for the multi-temporal description of geological remote sensing data, in addition to attribute information, its time and space changes are stored. [0004] At present, the corresponding tec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 湛邵斌唐飞贺敬凯李晓堂尹楠
Owner SHENZHEN INSTITUTE OF INFORMATION TECHNOLOGY