Post by account_disabled on Feb 18, 2024 3:33:20 GMT
The situation when an already existing object is entered into the table for the second time can occur for various reasons: either the same object came from two different sources, or an error occurred during recording and the data was duplicated. In this case, the value doubles and, as a result, the statistics are violated. Non-uniqueness of values . There are cases when a parameter of a certain record must be individual and not repeated. For example, when we are talking about the number of a particular document (passport, insurance policy, etc.
If the number is repeated in different records, the data Phone Number List is erroneous, and their processing may fail and it will not be possible to complete it. Example: the same insurance number was entered for Ivan Petrov and Vasily Kuznetsov. This cannot be true, therefore one of the entries is incorrect (usually, but not always, the one entered later). Conflicting Records . t contain different data. For example, a person's phone number is different.
This error may occur if data comes from different sources. In this case, you have to correct them by merging or deleting. Otherwise, the algorithm will perceive these objects as different, or correct processing will become impossible. For example: the table contained unequal data on the age of the user Ivan Petrov. Clearing data involves deleting one of the rows. Find out which IT professions are in the TOP 30 with income starting from 210,000 ₽/month The GeekBrains team, together with international career development specialists, has prepared materials that will help you get started on the path to your dream profession.
If the number is repeated in different records, the data Phone Number List is erroneous, and their processing may fail and it will not be possible to complete it. Example: the same insurance number was entered for Ivan Petrov and Vasily Kuznetsov. This cannot be true, therefore one of the entries is incorrect (usually, but not always, the one entered later). Conflicting Records . t contain different data. For example, a person's phone number is different.
This error may occur if data comes from different sources. In this case, you have to correct them by merging or deleting. Otherwise, the algorithm will perceive these objects as different, or correct processing will become impossible. For example: the table contained unequal data on the age of the user Ivan Petrov. Clearing data involves deleting one of the rows. Find out which IT professions are in the TOP 30 with income starting from 210,000 ₽/month The GeekBrains team, together with international career development specialists, has prepared materials that will help you get started on the path to your dream profession.