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Multilevel index technology for file database

An indexing technology and database technology, which is applied in the field of multi-level indexing of file databases, can solve problems such as limited query efficiency and difficulty in meeting efficiency requirements, and achieve the effect of improving query performance

Inactive Publication Date: 2009-10-07
山东中创软件商用中间件股份有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, query efficiency is the main limitation of the use of this technology
Although the query efficiency can be improved through memory buffering technology (i.e., cache technology), it is still difficult to meet the efficiency requirements when a large amount of data needs to be stored due to the limitation of the actual environment.

Method used

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  • Multilevel index technology for file database
  • Multilevel index technology for file database
  • Multilevel index technology for file database

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0031] A file database multi-level indexing technology, its process is as follows image 3 As shown, it includes two steps of data storage and data query, among which,

[0032] Such as figure 1 As shown, data storage includes the following steps:

[0033] The step starts at 101: the stored procedure starts.

[0034] Then enter step 102: look for the blank position of the data file to store data, the data includes two parts of key (key) and value (data), the key is the keyword for querying data, the key and value are formed into a name-value pair structure, and as a storage record, the Records are stored in an empty position in the data file, which is labeled data_position.

[0035] Then go to step 103: the HASH conversion generates the index storage position, using the key (key) of the data as a parameter, calling the HASH function, and converting it into a value, which is used as the index storage position, and the position is marked as index_position.

[0036] Then enter...

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Abstract

The invention relates to a multilevel index technology for file database, in particular to a watermark access mechanism adopted by an InforGuard watermark module. The technology comprises such two steps as data storage and data query. Index is stored by establishing independent index files and according to an HASH algorithm. By the multilevel index technology located rapidly in two phases, the invention overcomes the weakness of the traditional file database of low efficiency, thus obviously improving the property of data query in the file database.

Description

technical field [0001] The invention relates to a file database multi-level index technology, that is, the watermark access mechanism adopted by the InforGuard watermark module. Background technique [0002] Functionally, in order to verify the legitimacy of webpage files, InforGuard must store the original watermark of the webpage file (the watermark is the summary information of the file) for comparison. Each webpage corresponds to its own watermark, and the total number of watermarks is proportional to the total number of webpages on the website. When the website is large in scale, a large amount of watermark data must be stored. In order to ensure high efficiency of watermark storage and query, InforGuard products have designed a file database based on multi-level index technology to store watermark information. [0003] File databases are different from various commercial databases (such as Oracle, etc.) in that they are portable and highly specific. Many products will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30
Inventor 王进刘毅枫石磊黄三伟刘宗福刘春
Owner 山东中创软件商用中间件股份有限公司
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