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Compression-sensitive database file storage method and system

A file storage and data storage technology, applied in database indexing, structured data retrieval, special data processing applications, etc. Data compression ratio, the effect of high compression ratio

Active Publication Date: 2021-03-30
XIAN UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The object of the present invention is to provide a compression-sensitive database file storage method and system for the above-mentioned problem that massive data storage occupies more storage space in the prior art, and improve the Data compression ratio of database files to reduce data storage space

Method used

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  • Compression-sensitive database file storage method and system
  • Compression-sensitive database file storage method and system

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] The present invention proposes a compression-sensitive database file storage method. The file format counts the repetition degree of the row direction and the column direction of the data stored in the database, and selects the direction with high repetition degree to store data, so that the stored data is more accurate. It is conducive to subsequent compression, thereby improving the data compression ratio of the database file and reducing the data storage space.

[0021] A compression-sensitive database file storage method, comprising the following steps:

[0022] Step 1. Count the repeatability of the database data in the row direction and column direction;

[0023] The data to be stored is formed into a two-dimensional matrix in the memory according to the rows and columns, and the blocks are cut from left to right and from top to bottom according...

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Abstract

The invention discloses a compression-sensitive database file storage method and system. The storage method comprises the following steps: 1, counting the repetition degree of database data in a row direction and a column direction; and 2, selecting a direction with high repetition degree for data storage. The storage system comprises: a repetition degree statistics module used for counting the repetition degree of the database data in the row direction and the column direction; and a storage direction selection and storage module used for selecting the direction with high repetition degree for data storage. The data compression ratio of the database file can be improved, and the data storage space is reduced.

Description

technical field [0001] The invention belongs to the field of computer databases, and in particular relates to a compression-sensitive database file storage method and system. Background technique [0002] Under the background of the Internet of Things technology, the massive data storage generated by many devices has caused tremendous pressure on the database system. How to effectively store these data has been a research problem in the field of computer databases. Massive data storage puts forward extremely high requirements on the capacity of data storage devices. In order to reduce data storage space, existing databases begin to use data lossless compression technology to compress data to reduce data storage space. In the ORC (Optimized Row Columnar) file storage format, data is usually stored in a column-first manner. The basic idea of ​​column storage is that since the data type of the same field is the same, there is a greater probability of duplicate data, which is m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F16/22
CPCG06F16/22Y02D10/00
Inventor 张琼
Owner XIAN UNIV OF POSTS & TELECOMM