Multiple Entity Types Wireless Broadcast Database System

In a wireless environment, data broadcast paradigm has been recognized as an effective and scalable mechanism to disseminate frequently requested information to a large number of clients. This paper presents the development of a multiple entity types wireless broadcast database system. The broadcast system is designed to serve transitive queries or queries that access related data items belonging to different entity types. The broadcast data are retrieved from a central database server. We apply three different data broadcast schemes including: (i), filtering technique for mobile device to perform transitive queries and display the desired data from incoming multiple entity types broadcast data items; (ii), the index broadcasting scheme designed to predict the arrival of the desired data to appropriately execute power conserving mode; (iii), incorporate multiple channel environments to allow mobile device to tune into multiple broadcast channels to receive the desired data. The proposed model uses a share indices price context to demonstrate the effective use of these data broadcast schemes.