Active tags have a built-in power source (i.e. Battery) and will broadcast their signal to readers. Passive tags do not have a built in power source. Instead passive tags wait for a reader's signal to reach them and provide power to the tag. The passive tag will then utilize the signal from the reader for power and broadcast its unique ID back to the reader on the reader's signal...
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Currently tags in the 915mhz range are being used for many supply chain applications. These tags have a 64 or 96 bit memory capacity and are governed under a set of standards knows as Electronic Product Code (EPC). 915Mzh tags which comply with this standard are known as EPC tags. A reader is a box which can have from 1 to 8 antennas attached to it...
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Data Warehousing The middle tier provides process management services (such as process development, process enactment, process monitoring, and process resourcing) that are shared by multiple applications (Sadoski, 2006)...	5 / 1137
Database & Computer Terminology Data warehouses can ultimately hold large amounts of data which may become hard to sort through for specific data pieces. Data Marts help out by reducing the unnecessary data for a specific purpose, and presenting only relevant data...	3 / 722
Enterprise Data Management Data Mart is not places were you could buy cheap data (sorry for the bad joke I just had to be me). Data Marts are very similar to Data Warehouse, in that they both gather data from different databases...	2 / 381
Data Architectures A fact table consists of rows that contain consolidated and summarized data. The fact table contains a multi-part primary key, each part of which is a foreign key to the surrounding dimension tables...	3 / 653