3 Classes of Anomalies… Syntactically Dirty Data
{"Image DocumentName": "3 Classes of Anomalies\u2026 Syntactically Dirty Data", "Image ImageDescription": "Lexical Errors. Discrepancies between the structure of the data items and the specified format of stored values. e.g. number of columns used are unexpected for a tuple (mixed up number of attributes) Irregularities. Non uniform use of units and values, such as only giving annual salary but without info i.e. in US  or PK Rs? Semantically Dirty Data. Integrity Constraint violation. Contradiction. DoB > Hiring date etc. Duplication. This slide will NOT go to Graphics. Ahsan Abdullah.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}