Database deleted data recovery method and device

A technology for deleting data and databases, applied in the computer field, can solve problems such as inability to delete data recovery, and achieve the effect of comprehensive recovery

Active Publication Date: 2020-12-08
XIAMEN MEIYA PICO INFORMATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Taking Oracle as an example, there is currently no effective |Oracle deleted data record recovery technology on the market, resulting in the inability to effectively recover deleted data

Method used

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  • Database deleted data recovery method and device
  • Database deleted data recovery method and device
  • Database deleted data recovery method and device

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Embodiment Construction

[0025] The application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain related inventions, rather than to limit the invention. It should also be noted that, for the convenience of description, only the parts related to the related invention are shown in the drawings.

[0026] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and embodiments.

[0027] figure 1 An exemplary system architecture 100 to which the method for restoring deleted data in a database according to the embodiment of the present application can be applied is shown.

[0028] Such as figure 1 As shown, the system architecture 100 may include a t...

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Abstract

The embodiment of the invention discloses a database deleted data recovery method and device. A specific embodiment of the method comprises the steps of determining a data segment set from a preset database file; for each data segment in the data segment set, determining a data area set from the data segments; for each data area in the data area set, determining a data block set from the data area; determining effective data blocks from the data block set; and determining a row type mark corresponding to each row of data in the effective data block, and recovering the row data corresponding tothe row type mark which is a deletion mark. According to the embodiment, the structure of the storage data in the database is effectively utilized, the storage position of the deleted data is accurately positioned and recovered, and the deleted data in the database are accurately and comprehensively recovered.

Description

technical field [0001] The embodiment of the present application relates to the field of computer technology, and in particular to a method and device for recovering deleted data in a database. Background technique [0002] The database is a warehouse that organizes, stores and manages data according to the data structure, so that the computer can be used to realize the automatic management of data. Therefore, the database has been widely used in the management of various departments in various enterprises. [0003] For example, the Oracle database is one of the most popular client / server (client / server) architecture databases, and it is also the most widely used database management system in the world. As a general database system, it has complete data management functions ; As a relational database, it is a complete relational product; as a distributed database, it realizes the distributed processing function. [0004] At present, the deleted record recovery technology of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F16/28
CPCG06F11/1471G06F16/284
Inventor 夏鹏飞雷鹏程沈长达张磊黄志炜
Owner XIAMEN MEIYA PICO INFORMATION
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