What do we mean by data cleansing? It defines that a set of data is accurate. Companies rely heavily on computerization of data in a simple way, so data cleansing is a very regular task. In cleansing operation, to check for the accuracy and consistency different types of tools are used to check for consistency and accuracy.
Data Cleansing is of two categories depending upon the complexity of tasks. Simple Cleaning. In order to verify accuracy various set of records are read by individual person or group of persons. In this task, correction of spelling mistakes and typos are done, proper filling and labeling of mislabeled data are done. Further incomplete and missing entries are completed. In order to ease operations, outdated and unrecoverable data are eliminated.