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  How Query Optimizer Works in RDBMS

In a previous post, we discussed how the various relational operators are implemented in relational database systems. If you have read that post, you probably still remember that there are a few alternative implementations for every operator. Thus, how should RDBMS determine which algorithm (or implementation) to use? Obviously, to optimize the performance for any query, RDBMS has to select the correct the algorithm based on the query. It would not be desirable to always use the same algori...

   DATABASE,DATABASE DESIGN,DATABASE OPTIMIZATION     2019-04-20 07:26:32

  Tom Uglow from Google : 5 steps to innovation

Google has been known for its innovation In Google there is a "welfare": each employee can spare 20% of his/her time to do what he/she likes to do so that any idea has a chance to be turned into reality. Perhaps this freedom makes Google capable of introducing new products and new ideas continuously. Google China held a small discussion session in its office in Tsinghua Science Park recently, Google Creative Director Tom Uglow shared some experience and cases of Google in production and innovat...

   Innovation,Technology,Google     2012-10-10 20:00:47

  IoT System Cyber Attack Case Study 02: Python Deserialization Attack and Library Hijacking Attack

Project Design Purpose: The objective of this cyber attack case study is to develop a workshop that demonstrates how a red team attacker can permanently compromise a people detection radar IoT device. The attack path is achieved through a series of attacks, including traffic eavesdropping, data deserialization attacks, web shell attacks, remote command/code execution, and Python library hijacking attacks. This case study is intended for IoT and data security professional training, aiming to ill...

       2024-07-14 01:40:09

  SIEM Big Data Visualization [04] : Data Transmission Latency SIEM Log Analysis Dashboard

This article will introduce the Data Transmission Latency Log Analysis Dashboard developed for SIEM big data analytics. This is part of the SIEM big data visualization project, if you are interested about other dashboard plug in, you can check below links: SIEM Big Data Visualization [01] : Dashboard for Monitoring Scam Events in Critical Infrastructure SIEM Big Data Visualization [02] : Dashboard for Summarizing SG National Cyber Threats in Critical Infrastructure SIEM Big Data Visualization [...

       2024-11-03 20:49:18

  10 notorious computer virus

The history of computer virus is the same as computer history. With more and more powerful computers, virus also are smarter and harder to be detected and killed. They have big impact on data security and system usability. We introduce 10 notorious computer virus in the history. 1. Creeper In 1971, the Creeper virus, an experimental self-replicating program, is written by Bob Thomas at BBN Technologies. Creeper infected DEC PDP-10 computers running the TENEX operating sy...

   Computer virus,History,Security     2013-07-16 21:09:22

  5 Great Hacks to Learn Before Launching a Startup

Maybe months or years have gone planning for a startup and finally you are ready to enter into the world of small business.  Excited enough to hit the “Launch” button. As the bulk of your business is good, so the rest of it must be the same. You think like that, right? But hey, you are wrong there. You may be selling the next big thing, but it does not matter until you have frozen your brand name in the niche market and gained a decent amount of credibility. But you can do that...

   SOFTWARE,STARTUP, ENTREPRENEUR     2016-06-21 09:33:05

  Top 10 reasons to use a low-code platform

Generally, as the best coding platforms, low code includes low code app development, process development solutions and software development tools. IT users utilize low code solutions as a source of the required building blocks for the building of workflows and applications. The building blocks make it easier to assemble apps and workflows without requiring hand-coding. The growth of low-code platforms therefore levels business grounds by reducing the time spent in coding among other benefits.&nb...

   LOW CODE,PROGRAMMING     2021-02-18 19:43:49

  Unlock Advanced Store Features with Custom Shopify Theme

In the world of e-commerce, a Shopify theme serves as the foundation for a store's visual appeal and functionality. Custom Shopify themes have gained popularity among online retailers looking to stand out in a crowded marketplace. These tailored designs offer unique opportunities to enhance user experience, boost conversions, and align the store's appearance with a brand's identity. The impact of a well-crafted custom Shopify theme extends beyond esthetics, playing a crucial role in a store's ov...

   SHOPIFY ,THEME,SHOPIFY THEME     2024-08-02 11:07:57

  How big company CEOs spend their time in work

As a company's steer holder, the CEO or founder takes plenty of pressure ordinary people even cannot imagine. They usually need to deal with different aspects of daily operation of a company including technology, business, marketing, public relationship etc. Lots of meetings, negotiations and presentations are waiting for them every day. Hence time is a precious resource for them. Let's take a look at how these CEOs spend their time in their work. 1. Apple CEO Tim Cook Gets up at 3:45 am ...

   CEO,STEVE JOBS,TIM COOK,ELON MUSK,JACK MA,MARK ZUCKERBERG,PONY MA     2016-08-13 13:29:00

  CSS Selector for Web Scraping

Creating a web scraper is no easy task. This is because it requires precision to identify the specific data points that we intend to collect for the end goal we are working towards.  Whether we are looking to create a marketing content database or analyze market trends, the last thing we need from our scraper is for it to return a lot of unnecessary data that will not help our cause. To avoid the inconvenience of going through huge amounts of data to get what we requested, it is crucial to ...

   CSS,WEB DESIGN,SELECTOR     2023-02-20 07:32:53

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