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Distributed database management method

A management method and database technology, applied in the management field of pay TV decoder network, can solve the problem that it is difficult for the management center to know whether the information arrives correctly, the return channel cannot be used, the difficulty, etc.

Inactive Publication Date: 2003-08-13
NAGRAVISION SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This concept is easy when all the elements that determine a user's profile are accessible in a single database, but difficult when the information is distributed across a large number of databases
[0009] Also, since some types of systems cannot use the return channel towards the management center, it is difficult for the management center to know whether the information it sends is arriving correctly

Method used

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  • Distributed database management method
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  • Distributed database management method

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Embodiment Construction

[0023] exist figure 1 Above, it shows the background technology, SMS (Subscriber Management System (User Management System)) talks with the management center CAS (Conditional Access System (Conditional Access System)), in order to access one of the distributed databases DB. The CAS center acts as an address translator between the upper layer for SMS and the lower layer for the database DB.

[0024] Therefore, according to the technology, the CAS basically serves as a logical expression for building a different user database, and allows access independent of material implementation. The function of the logical / physical converter comes from the CAS.

[0025] Another important task of CAS is to support the communication protocol with the database.

[0026] In FIG. 2, the CAS according to the invention includes an image of each database in contact with it. The SMS request is first processed by the CAS, which determines the relevant database or databases. The CAS according to t...

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Abstract

The possibilities available to pay television subscribers are more and more varied and cater for the expectations of consumers. In order to be able to customise products offered to subscribers, it is important to be able to determine the criteria underlying a particular offer by using not only the subscriber's parameters but in accordance with parameters which can concern a plurality of subscribers. The inventive method consists in storing in a distributed database management centre, the whole set of database images and in performing operations aimed at fulfilling a condition on the whole set of database images. Thus, if the a non-null result concerning the condition is obtained in return, the order is sent for the group of databases concerned.

Description

technical field [0001] The invention relates to the management and updating of distributed databases, in particular in networks of pay television decoders, and to allowing access to these databases. Background technique [0002] In a system comprising a management center and a plurality of users distributed over a large area, each user has a user database, known to use electromagnetic waves to transmit management information and update the databases of these users by satellite or cable. This information is provided to either all users, or a specific user, or a group of users. [0003] The management center has an interpreter capable of associating the logical address of the user with his physical address and thus can be associated with the information group distributed in the user database. Therefore, a central upstream system request, such as a user management system, can access any user's database content without knowing its physical location. [0004] According to this ...

Claims

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Application Information

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IPC IPC(8): G06F17/30H04N7/16
CPCH04N21/2541G06F17/30557H04N21/25891H04N7/165H04N21/2393G06F17/30575G06F16/27G06F16/25
Inventor 米歇尔·布里
Owner NAGRAVISION SA
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