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what is the ‘data lake’, the ‘data warehouse’ and the ‘data marts’

Data has become the most valuable asset for organizations. This makes its management and protection key. In this scenario, cloud storage experiences remarkable growth that enables companies to access files and documents from almost anywhere at any time.

However, there are several different types of solutions data storages based on the cloud, and choosing the right one is essential to ensure your security.

There are three main types of cloud-based data repositories: ‘data lake’, data warehouse and ‘data mart’. Each one has its own strengths and weaknesses, so it is vitally important to choose a solution that fits the specific needs of each business.

‘Data Lake’, a sea of ​​data

By data lake it is generally understood as the most basic type of cloud storage available. This type of repository allows you to store massive amounts of unstructured and unprocessed data. Like water flowing from a river to a lake, data flows from one or more sources into the data lake, which can contain much other data within its depths. The data may not be ordered, but it may all be contained within the lake.

According to IBM, ‘data lakes’ are useful for organizations that need to have and store massive amounts of information from multiple sources. They are currently used to house large amounts of raw data that is used to train machine learning models like ChatGPT.

Sectors such as energy make use of these ‘data lakes’ to analyze large amounts of data and thus optimize energy production; while the health one analyzes the data of patients and medications to predict the costs and diagnoses of medical care.

Organizations store data in data lakes if they haven’t decided how best to use it and need a place to keep it

Organizations also store data in these ‘lakes’ if they haven’t decided how best to use it and need a place to keep it. Given the difficulty of running analysis on this data stored in a ‘data lake’, it will be key to choose the best provider to be able to move information seamlessly between the repository and a dedicated analysis platform.

Data warehouses for better decision making

Unlike the ‘data lakes’data warehouses, or ‘data warehouse’, are specifically designed to generate reports and analyze structured data.

This is achieved through a process called ETL (Extract, Transform and Load), which involves extract, transform and load. That is, the data is first extracted from its original source and then automatically transformed to fit the parameters of the data warehouse.

This requires cleaning the data, combining data from different sources, and converting it to standardized formats. Finally, that data is uploaded to the warehouse and organized in its assigned location.

Data warehouses have a wide variety of business use cases across all industries that rely on data-driven decisions. For example, retail stores use data warehouses to store and analyze sales, inventory, and customer data. Through this analysis, stores can make better decisions about item pricing and inventory management.

Other companies that use data warehouses are financial institutions, which store and analyze customer data and financial transactions to identify patterns that can help establish better risk management strategies.

software defined storage

The specificity of ‘data marts’

Technically, a ‘data mart’ is actually contained within a larger data warehouse and is meant to serve very specific business functions. While a warehouse or ‘data lake’ normally contains all of a company’s data, a ‘data mart’ contains only the relevant data for your specific role.

Companies using data marts are generally looking to analyze a highly focused data set in a short period of time. According to IBM, they are often used by marketing departments at larger companies to track and analyze data related to campaign performance, including conversion rates and ROI, to better understand what can be improved for future campaigns.

The ‘data marts’, in addition to being faster and more focused on specific data, tend to be less expensive to maintain

In addition to being faster and more focused on specific data, data marts also tend to be less expensive to maintain, mostly due to their small footprint compared to other options. In addition, they are also more secure since access can be restricted to only the people in the company who work with that specific data.

‘Data harbor’, or data port

Along with these options seen so far, there are also several alternative storage types that offer similar services or improve storage capabilities. data repositories existing.

the signature calamu bills itself as the first provider of a new type of storage solution called a ‘data harbour’. According to its founder and CEO, Paul Lewis, it works as an additional layer of security to protect your most sensitive information.


Data stored on this ‘data port’ is fragmented into multiple parts, scattered across multiple repositories, and then re-encrypted. If an unauthorized intruder tries to access them, they are left with just a collection of meaningless numbers.

This way, if someone unauthorized accesses a repository, they will only get a piece of data that doesn’t make sense on its own. However, when it comes to authorized access, Calamu can put those pieces back together to make sense.

initial image | dallas reedy

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Test winner headphones: These ANC headphones beat even Sony from the throne

The most important things at a glance:

  • The Sennheiser Momentum 4 Wireless is our current test winner among Bluetooth headphones
  • You are currently getting the model for 268.21 euros at Amazon
  • Below you will find an excerpt from our best list of Bluetooth headphones
At the time of writing, Sony’s WH-1000XM5 is no longer our number one noise-cancelling headphone. The Sony headphones were beaten by the Sennheiser Momentum 4 Wireless.

The Momentum 4 Wireless convinces with a great, clear sound with a rich bass. As a reward, there is the top grade of 1.2, with which the Sennheiser model beats the former test winner in terms of sound. The excellent active noise suppression was also a lot of fun in the practical test. In our stress test scenario (simulated aircraft noise), the Sennheiser Momentum 4 Wireless attenuated very effectively for us. There is further praise for the excellent battery life: With the highest ANC strength, the Sennheiser Momentum 4 Wireless ran for a whopping 53 hours in our test scenario – a very strong performance. Although some headphones run longer without ANC, since the external signal processing cannot be deactivated with the Sennheiser Momentum 4 Wireless, we were not able to test this here.

A few small things bothered, for example, the ear cups can only be rotated, but not folded. But that’s complaining on a high level.

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Time change from Saturday to Sunday: Drivers now face a very special danger

The ADAC advises drivers to drive with foresight and be more aware of the dangers in order to avoid serious accidents involving wildlife. This applies in particular to forest sections and roadside field edges. In purely temporal terms, the evening and early morning hours during twilight are particularly dangerous. So foot off the gas and always be ready to brake.

An additional helper is the free Wildwarner app, which is available for Android and iOS. The uses acoustic signals to draw your attention to particular danger spots. The best way to do this is to connect the app to your car via Bluetooth and receive the information via the built-in music system. You do not have to operate the app itself while driving.

Wildwarner covers Germany, Austria and Switzerland. Hunters and drivers can optionally register and actively report danger spots themselves. If you already see wild animals on the side of the road, reduce your speed further and switch off the high beam. Horns can be used to scare away wild animals.

If you want, you can also report an accident with wildlife or a dead animal along the route in the animal find register. This is a database that systematically records animals nationwide.
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The end of “John Wick 4” explained: what comes after the action hit?

The end of “John Wick 4” probably came as a surprise to most fans. The ex-killer wins the duel against the nasty Marquis de Gramont (Bill Skarsgård) and is thus released from all duties to the Hohen Hammer. Unfortunately, he was badly injured in the shootout with his former friend and current antagonist Caine (Donnie Yen). And so, with everything settled, John Wick, bleeding heavily, sits on the steps below the Sacre Ceour Cathedral, looks up at the beautiful suns and thinks of his late wife Helen (Bridget Moynahan) before he falls dead himself. In the next scene, Winston (Ian McShane) and the Bowery King (Laurence Fishburne) stand in front of the former hitman’s grave and wonder whether he has ended up in heaven or hell.

So John Wick really does appear to be dead. And that, although it was said for a long time that there would be a fifth part. But as director Chad Stahelski has now revealed to The Hollywood Reporter, he and Keanu Reeves have only just finished the “John Wick” series. Nevertheless, they are not averse to further sequels. Unfortunately, ambiguous statements like these are standard in Hollywood. After all, you don’t want to obstruct the future of a franchise. But with Chad Stahelski’s announcement, you can be pretty sure that we won’t see a “John Wick” movie in the near future.

The post-credit sequence in the fourth part is all the more irritating. Because we see Donnie Yen’s character Caine again, how he visits his daughter. But before he can reach her, Akira (Rina Sawayama) suddenly appears. She probably wants revenge on Caine for killing her father. But before that happens, the film ends. Now, of course, one can speculate: is the scene just there to bring Caine and Akira’s stories to an end? Or is it even the cornerstone for a spin-off? An offshoot has already been confirmed that expands the “John Wick” universe.

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