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What is Data Lake? – A Complete Guide

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A data lake is more of an architectural blueprint than a specific platform built around a big data repository using a schema reading approach. In a data lake, we store large quantities of unstructured data in object storage like Amazon S3 without forming the data in advance and without retaining the flexibility to apply more ETL and ELT to the data. In the future. This makes it ideal for industries that need to analyze constantly changing data or substantial data sets.

Why Should you use a Data Lake?

Why Should you use a Data Lake_

Data lakes are primarily an open format so that users are not locked into a proprietary system like a data warehouse, which is becoming increasingly important in modern data architectures. Data lakes are also very durable and inexpensive due to their ability to scale and take advantage of object storage. Additionally, advanced analytics and machine learning of unstructured data are among the top strategic priorities for organizations today. The unique ability to swig raw information in various formats (structured, unstructured, semi-structured) and the other profits mentioned make a data lake the clear choice for data storage.

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Why Build a Data Lake?

Data Lake provides an ample storage pool to store data from data sources. Here are 4 reasons to create a data lake:

1) Unify

Enterprise data resides on multiple platforms used daily. The data can live in ERP systems, CRM platforms, marketing applications, etc. It helps companies organize data on their respective media. However, this is not always the case. If you want to analyze all of your funnel and attribution data, you need to bring all of your data organized in one room.

Data Lake is a perfect solution to collect all information from different data sources in one place. In addition, the data lake architecture makes it easy for businesses to visualize data holistically and generate insights from it.

2) Full Access to Consultations

Most enterprise platforms companies use for their day-to-day operations provide transactional API access to data. However, these APIs are not designed to meet the needs of reporting tools, which end up with limited access to information. Storage data in data lakes allows full access to data that can be used directly by BI tools to extract data when needed.

The ELT process is a flexible, reliable, and fast way to load data into the data lake and then use it with other implements.

3) Performance

Often the data sources are the production systems, which do not offer faster query processing. Therefore, it may affect the performance of the application you are running. Data aggregation requires higher query speed, and transactional databases are not considered the optimal solution for this.

The Data Lake architecture supports fast query processing. It allows users to run ad hoc analytical queries independent of the production environment. As a result, data Lake provides faster queries and easier scaling up and down.

4) Progress

Collecting data in one place is necessary before moving on to other steps because loading data from one foundation makes it easier to work with BI tools. In addition, data Lake helps you create cleaner, error-free  with fewer iterations.

Key Components of Data Lake Architecture

Data lakes save organizations a lot of work and time usually spent creating a data structure. In addition, this allows for rapid data acquisition and storage. Here are some critical components of a robust and efficient data lake architecture pattern:

  • Governance: It is essential to measure performance and improve the data through monitoring and follow-up operations.
  • Security: This is a crucial element to consider during the early stages of the architecture. It differs from the security measures used for relational databases.
  • Metadata: Metadata is data that references other data. For example, recharge intervals, patterns, etc.
  • Stewardship: Depending on the organization, this function may be entrust to the owners or a specialized team.
  • ELT and Monitoring Process: A tool is need to orchestrate the data flow moving from the raw layer, through the clean layer, to the sand and spray layer, as transformations may need to be apply to the data.


Data democratizes information and is a cost-effective way to store all of an organization’s it for further processing. The research analyst can focus on finding patterns of meaning in the data, not the data itself. Unlike a hierarchical data warehouse, where information is store in files and folders, it has a flat architecture. Each data item in a data lake is given a unique identifier and tagged with a set of metadata information.

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