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The Specific Evolution of Query Languages

By Ricky Sun and Jason Zhang

Admittedly, we are now living in an era of big data. The rapid evolvement of the Internet and mobile internet has greatly boosted the rate of data generated, there are billions of devices, some even predicting the arrival of trillions of sensory devices within this decade, generating a gigantic volume of data.

Database was created to tackle this ever-growing data challenge. There were other concepts and solutions like data mart, data warehouse, and data lake created to cater to the needs of data storage, transformation, intelligent analysis, reporting, and many other things. But what makes database essentially indispensable are mainly two promises with regards to the ability to process all aforementioned tasks:

  • Performance
  • Query Language

In the world of modern business, performance has always been a first-class citizen. A database can be called database manifests due to its processing power against data with small, and usually minimal and business-sense-making, latencies. This is in contrast with many BI-era data warehouse solutions or Hadoop-school solutions, which may be highly distributed and scalable but with performances that are quite worrisome. And this is exactly why we are seeing the dying of Hadoop (or replacement with Spark and other newer architectures) in recent years.

The trend of moving from Big Data to Fast Data is to ensure that given the growing data volume, the underpinning database frameworks can handle it without sacrificing performance. The below diagram illustrates the evolvement of database-centric data processing technologies. In short, we would like to summarize the trend as Data →  Big Data → Fast Data → Deep Data. Let’s not worry about the new concepts (fast or deep) here, we’ll get to them momentarily.

Diagram-0: The Evolution of Data to Big Data to Fast Data to Deep Data

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