What is data lake?

[taxiongo]

A data lake is a storage repository that holds a vast amount of raw data in its native format until it is needed for analytics applications. While a traditional data warehouse stores data in hierarchical dimensions and tables, a data lake uses a flat architecture to store data, primarily in files or object storage. That gives users more flexibility on data management, storage and usage.

[aviaiva]

A data lake is a centralized repository that allows you to store all your structured and unstructured data at any scale. The term "data lake" refers to a large, single store of data including raw, processed, and analyzed data, stored in its native format without the need for a fixed schema. This makes data lakes a flexible and cost-effective option for storing big data and supporting a wide range of data types and structures, including structured data from relational databases, semi-structured data from log files and CSV files, and unstructured data such as social media, sensor, and satellite data.

A data lake provides a single place to store all data, making it easier to manage and secure data and enabling organizations to analyze their data more effectively. The stored data can be processed using a variety of technologies and tools, including Apache Spark, Apache Hive, Apache Pig, and more, to gain insights, drive analytics, and support machine learning and artificial intelligence initiatives. Data lakes also allow organizations to scale their storage and processing capabilities as their data grows, making them a popular choice for organizations dealing with big data.

[ryanwuk]

A Data lake is a large, centralized repository that allows organizations to store all of their structured and unstructured data at any scale. It's designed to store data in its raw form and provides easy access to anyone who needs it.

Unlike traditional data warehouses, data lakes don't require any pre-defined schema or structure. Instead, they allow organizations to store all types of data, including data from various sources and formats, without any preprocessing.

Data lakes are typically built on top of big data technologies like Apache Hadoop, Apache Spark, and NoSQL databases. They also provide a wide range of tools and frameworks to help organizations extract insights and value from their data, including machine learning algorithms, data analytics tools, and visualization tools.

Data lakes have become increasingly popular in recent years as organizations are generating and collecting more data than ever before. By storing all of their data in one central location, organizations can gain a more comprehensive view of their business operations, identify new opportunities, and make more informed decisions.

[mrzengineering]

Data Lake: A centralized repository that stores raw, diverse data types without predefined structure or schema. Enables flexible and scalable data analysis, exploration, and advanced analytics. Supports various data consumers and facilitates the discovery of valuable insights.

[rickmine]

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[sanjalisharma89]

Data lakes commonly store sets of big data that can include a combination of structured, unstructured and semistructured data.

[manoharparakh]

A Data Lake refers to the massive collection of raw files that may be hosted in different and typically distributed storage systems. It is a centralized store that permits users to store their organized and unstructured information of any scale. Their profoundly scalable environment can support amazingly huge information volumes and accept data in its local format from a wide assortment of data sources. Data Lakes is an emerging concept geared to unleash the power of data relevant for analysis within and outside an organization.