By Piali De, Engineering Fellow, Raytheon Company
Remember ledgers? People with great penmanship wrote data into books of columns and rows, which were put on a shelf for retrieval when needed. After computer databases were introduced, information was at our fingertips, and the books stayed on the shelf. But the ledgers had something in common with databases: smart people who understood how to determine the most relevant information and use it to make decisions.








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