In computer science, the state of a program is defined as its condition regarding stored inputs. The term "state" here is used similarly to how it is used in science — whereas the state of an object, for instance, as a gas, liquid or solid, shows its current physical makeup, the state of a computer program shows its current values or...
Data extraction is where data is analyzed and crawled through to retrieve relevant information from data sources (like a database) in a specific pattern. Further data processing is done, which involves adding metadata and other data integration; another process in the data workflow. The majority of data extraction comes from unstructured data sources and different data formats. This unstructured data can be in any form, such as tables, indexes, and analytics.
Data in a warehouse may come from different sources, a data warehose requires three different methods to utlize the incoming data. These processes are known as Extraction, Transformation, and Loading (ETL).The process of data extraction involves retrieval of data from disheveled data sources. The data extracts are then loaded into the staging area of the relational database. Here extraction logic is used and source system is queried for data using application programming interfaces. Following this process, the data is now ready to go through the transformation phase of the ETL process.
Read More »
Join 138,000+ IT pros on our weekly newsletter
Home | Advertising Info | Write for Us | About | Contact Us
2010 - 2015
Partner Sites :