How does database data extraction work?

Question

There are three steps in the ETL process: Extraction: Data is taken from one or more sources or systems.The extraction locates and identifies relevant data, then prepares it for processing or transformation. Extraction allows many different kinds of data to be combined and ultimately mined for business intelligence.

What is the process of data extraction?

Data extraction refers to the process of procuring data from a given source and moving it to a new context, either on-site, cloud-based, or a hybrid of both. There are various strategies employed to this end, which can be complex and are often performed manually.

What is extracting in database?

Database extraction is a process of retrieving data from disparate databases. In most cases, companies extract data to process it further or to transfer it to another repository for storage, such as a data warehouse or a data lake.

How does information extraction work?

Information extraction is the process of extracting information from unstructured textual sources to enable finding entities as well as classifying and storing them in a database.

What are the two types of data extraction?

Coming back to data extraction, there are two types of data extraction: Logical and Physical extraction.

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