You're reading from Data Engineering with AWS - Second Edition

Product typeBook

Published inOct 2023

PublisherPackt

ISBN-139781804614426

Edition2nd Edition

Concepts

Data Engineering

Author (1)

Gareth Eagar

What does it mean for a data lake to be transactional?

Transactional data lakes is a common way to refer to the abilities enabled by these new table formats, but what does that mean?

Let’s start by looking at the definition of a database transaction in general, from Wikipedia (https://en.wikipedia.org/wiki/Database_transaction):

”A database transaction symbolizes a unit of work, performed within a database management system (or similar system) against a database, that is treated in a coherent and reliable way independent of other transactions.”

What this means is that you have the ability to update a database in a way that may potentially make multiple updates as part of the transaction, and you have the guarantee that all the individual updates will work and be applied consistently, or the whole transaction will fail. That means that if there are five updates as part of the transaction, and the third update fails, then the two previous...

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Data Engineering with AWS - Second Edition

Published in: Oct 2023Publisher: PacktISBN-13: 9781804614426

Author (1)

Gareth Eagar

Gareth Eagar has over 25 years of experience in the IT industry, starting in South Africa, working in the United Kingdom for a while, and now based in the USA. Having worked at AWS since 2017, Gareth has broad experience with a variety of AWS services, and deep expertise around building data platforms on AWS. While Gareth currently works as a Solutions Architect, he has also worked in AWS Professional Services, helping architect and implement data platforms for global customers. Gareth frequently speaks on data related topics.
Read more about Gareth Eagar

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What does it mean for a data lake to be transactional?

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