The phrase “PC load letter” is a printer error message on some mostly obsolete types of HP laserjet printers. Here, “PC” stands for “paper cassette” and the error indicates that no letter-sized paper is available for a print job with a letter size. The error message is instructing the user to load a letter-sized paper into the printer.
The 3Vs were discussed in the 2001 paper, 3D Data Management: Controlling Data Volume, Velocity and Variety, by Doug Laney. The paper predicted trends in data warehousing techniques that evolved from 2001 to 2006, particularly in e-commerce-based big data.
3Vs is a data management trend that was conceived to help organizations realize and cope with the emergence of big data. The 3Vs compare the storage, utilization and consumption of data with regards to the three base dimensions, and it encompasses all data forms, regardless of storage location or format, that are eventually compiled as a big data repository.
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