Origin of excerpt. From Middle English excerpted from Latin excerptus past participle of excerpere to pick out ex-ex-carpere to pluck; see kerp-in Indo-European roots.
What is Degaussing. Degaussing is simply the act of erasing data from magnetic media. Sometimes it is referred to as sanitization.. It works by subjecting magnetic media to a strong magnetic field that removes data from data bearing surfaces. The magnetic field can be created either by powerful magnets or an electromagnetic discharge.
We classify data quality problems that are addressed by data cleaning and provide an overview of the main. solution approaches. Data cleaning is especially required when integrating heterogeneous data sources and. should be addressed together with schema-related data transformations. In data warehouses, data cleaning is a major part of the so-called ETL process. We also discuss current tool support for data cleaning. 1 Introduction Data cleaning, also called data cleansing or scrubbing, deals with detecting and removing errors and