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ETL vendors benchmark their record-systems at multiple TB (terabytes) per hour (or ~1 GB per second) using powerful servers with multiple CPUs, multiple hard drives, multiple gigabit-network connections, and much memory. In real life, the slowest part of an ETL process usually occurs in the database load phase.
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William H. Inmon (born 1945) is an American computer scientist, recognized by many as the father of the data warehouse. [1] [2] Inmon wrote the first book, held the first conference (with Arnie Barnett), wrote the first column in a magazine and was the first to offer classes in data warehousing.
William Stallings is an American author. He has written computer science textbooks on operating systems , computer networks , computer organization , and cryptography . Early life
EDSAC, on which the book was based, was the first computer in the world to provide a practical computing service for researchers. [2] Demand for the book was so limited initially that it took six years to sell out the first edition. [7] As computers became more common in the 1950s, the book became the standard textbook on programming for a time ...
Apache NiFi is a software project from the Apache Software Foundation designed to automate the flow of data between software systems.Leveraging the concept of extract, transform, load (ETL), it is based on the "NiagaraFiles" software previously developed by the US National Security Agency (NSA), which is also the source of a part of its present name – NiFi.
Extract, load, transform (ELT) is an alternative to extract, transform, load (ETL) used with data lake implementations. In contrast to ETL, in ELT models the data is not transformed on entry to the data lake, but stored in its original raw format. This enables faster loading times.
A Guide to Computer Literature. Archon Books. Rojas, Raul (2001). Encyclopedia of Computers and Computer History. Routledge. ISBN 1-57958-235-4. Tomash, Edwin; Williams, Michael R. (2009). The Erwin Tomash Library on the History of Computing: An Annotated and Illustrated Catalog. (privately printed). Yost, Jeffrey R. (2002).