Data lake

How it is used

Usually built on cloud storage such as Amazon S3. It is cheaper and more flexible than a warehouse but harder to query. A badly managed lake is jokingly called a 'data swamp', and a design that combines both is called a 'lakehouse'.

Example sentences

1. All the raw clickstream logs go into the data lake first.

2. The data lake has everything, but nobody knows which files are current.

Common collocations

• store in the data lake
• cloud data lake
• data lake storage
• lakehouse

Related terms

• data warehouseA central database built for reporting and analysis that collects historical data from many systems and is designed for large read queries rather than small updates.
• raw dataData in the form in which it was first collected or exported, before anyone has cleaned, combined or summarised it.
• data pipelineA series of automated steps that moves data from its sources, transforms it and delivers it to a destination such as a warehouse, dashboard or model.
• ETLShort for extract, transform, load: the process of taking data out of source systems, cleaning and reshaping it, and loading it into a warehouse.

This word in other fields

The same English word can have a different meaning in another field:

• data lake · Data Science & Analytics

More terms: Machine Learning and Data Processing

• artificial intelligence
• machine learning
• model
• dataset
• training data
• label
• train
• supervised learning
• neural network
• deep learning
• loss function
• overfitting