Implementing method of memory database on household gateway

Abstract

The invention discloses a realization method of a memory database on a home gateway. The method of the invention comprises the steps: 1. the storage structure and queue of data sheets and records in the memory database are initialized; 2. on the basis of the establishment of the storage structure of the memory database, the business data in a business database are uploaded to the memory database on the home gateway, while before the business data are uploaded, the business data are filtered; 3. data synchronization: when the data in business database are changed, the given data in the memory database are backed up; data synchronization is carried out by adopting a synchronous module, and if the synchronization succeeds, the backup data are cleared; 4. data access: a unified access interface of the memory database is provided for inquiring, adding, deleting and modifying, etc. Compared with the realization method of the existing memory database, the realization method of the invention requires few resources, has high data storage efficiency and is especially suitable for the business application that is based on a home gateway and has high requirement for data real time.

Description

technical field [0001] The invention relates to a home network system, in particular to a realization method of a memory database on a home gateway based on an embedded system. Background technique [0002] At present, the discussion on the digital home network has gradually moved from theoretical discussion to real life. In this wave of digitalization and broadbandization, the home gateway serves as a bridge connecting all external public networks play an important role in. A variety of value-added services based on home gateways, such as IPTV, smart home, VOIP, and IM instant messaging, have gradually developed and entered homes. Based on cost and business development needs, home gateways mostly use embedded systems, and due to the complexity and real-time nature of business based on home gateways, home gateways sometimes need to access and store local business information in real time. [0003] Due to the limited time and space resources of the embedded system, it is im...

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Problems solved by technology

[0005] The invention with the patent application number 200510018318.3 "A Method for Realizing Data Dictionary in Embedded Environment" discloses a method for realizing data dictionary in embedded environment, which stores the objects and attributes of database, table and column according to the hierarchical structure In the system buffer, it is divided into three layers: database, table or index, and column. Open-chain hash method is used to index database objects. The first-level hash table uses the database name as the hash key, and the second-level hash table The table name is used as the key, and the three-level hash table uses the column name as the hash key. It realizes the storage and operation of the memory data dictionary, but the write operation still needs to interact with the disk peripherals, which affects the real-time performance of the system. And the storage level is three layers, and the system query time consumption is relatively large

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