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Bitmap indexing method and smart card

A bitmap index and smart card technology, applied in the database field, can solve the problems of large amount of operation data and bitmap index occupying a lot of memory resources, so as to reduce the amount of data, narrow the range of bitmap index, and solve the operation data volume of bitmap index. big effect

Inactive Publication Date: 2008-10-29
BEIJING WATCH DATA SYST
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AI Technical Summary

Problems solved by technology

[0017] The embodiment of the present invention provides a bitmap indexing method, which solves the technical problems that the existing bitmap indexing method has a large amount of computing data and bitmap indexing operations occupy a lot of memory resources

Method used

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  • Bitmap indexing method and smart card
  • Bitmap indexing method and smart card
  • Bitmap indexing method and smart card

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Embodiment Construction

[0036] The embodiment of the present invention provides a bitmap indexing method, and also provides a smart card.

[0037] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0038] The bitmap indexing method provided by the embodiment of the present invention solves the technical problems that the existing bitmap indexing method has a large amount of computing data and the bitmap indexing operation occupies a lot of memory resources.

[0039] like image 3 and Figure 4 As shown, the bitmap indexing method of the embodiment of the present invention includes the following steps:

[0040] S1, limiting the effective query area of ​​the target bit string;

[0041] In the embodiment of the present invention, S1 specifically includes the following steps:

[0042] a00. Determine the effective query area according to any one or combination of retrieval conditions, record classification, operator authority, and di...

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Abstract

The invention discloses a bitmap index method and an intelligent card, which relate to the field of database technology. The bitmap index method can solve the technical problems of a great amount of calculation data of the existing bitmap index method in the intelligent card and more occupied memory resources by the bitmap index operation. The bitmap index method provided by the invention comprises the following steps that: an effective inquiry region of a target bit string is limited; and the bitmap index operation is carried out in the effective inquiry region of the target bit string. An operation system of the intelligent card in the embodiment of the invention is provided with a bitmap index unit, the bitmap index unit comprises: a limiting module, which is used for limiting the effective inquiry region of the target bit string; and an index module, which is used for carrying out the bitmap index operation of the effective inquiry region of the target bit string. The bitmap index method and intelligent card are mainly applied in the bitmap index.

Description

technical field [0001] The invention relates to the field of database technology, in particular to a database management system realized on an embedded chip of an existing basic operating system. Background technique [0002] With the continuous advancement of technology, smart card applications have gradually become an indispensable part of people's lives. With the continuous promotion and popularization of smart card applications, people's functional requirements for smart cards are becoming more and more diverse. [0003] The development of smart card hardware technology is changing with each passing day, and the on-chip operating system of smart cards has been continuously matured and perfected, so that the database technology applied to traditional computers can be extended to the smart card operating system, providing a brand-new platform for better and richer mobile data services. Realize the platform, and data search technology is one of the cores in database techno...

Claims

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Application Information

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IPC IPC(8): G06F17/30G06K19/067
Inventor 高松叶新
Owner BEIJING WATCH DATA SYST
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