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batch validation is a programmed validation to achieve valid data. its done after data entry and before data cleaning. batch validation can be over night process or day process.
one is a validation the other is redundancy clue is in the name
Advantages and Disadvantages of primary data are: Advantages 1. Data is basic 2. Unbiased information 3. Original data 4. Data from the primary market/ population 5. Data direct from the population. Disadvantages. 1. Large volume of data. 2. Huge volume of population. 3. Time consuming 4. Direct and personal intervention has to be there. 5. Raw data.
It means where the computer checks whether the data is correct.
Yes because it gives a representation of all the data! <3