Blood counting machines aspirate a very small amount of the specimen through narrow tubing followed by an aperture and a laser flow cell. Laser eye sensors count the number of cells passing through the aperature, and can identify them; this is flow cytometry.
In computing, Extract, Transform and Load (ETL) refers to a process in database usage and especially in data warehousing that performs: Data extraction â extracts data from homogeneous or heterogeneous data sources.
ETL tools. List of the most popular ETL tools: Informatica, DataStage, BusinessObjects, Cognos, Warehouse Builder, AB Initio, Pentaho, Microsoft SQL Server 2008, SAS Data Integration Studio. Data Warehouse po Polsku