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	Podcast:		voiceofthedba's podcast
	Episode:		Should the Data Lake be Immutable?
	Category:		Technology
	Duration:		00:02:21
	Publish Date:		2019-02-25 20:00:00
	Description:		There's a concept in computer science of immutability. At a high level, this means once something is set, it isn't changed. Various computer science languages do this with variables, where values don't change, though variables can be destroyed and recreated. In the PASS keynote, Dr. Ramakrishnan pointed out that we have silos of data, often in disparate systems where we keep our information. We want to query this together, so we transfer this to a data warehouse or data lake (the future view) and that items in the data lake are immutable. They aren't allowed to chang in the way that we update values in our relational databases. We should just read the most recent version of any data, and if there is an update, just add a new set of data. Read the rest of Should the Data Lake be Immutable?
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