Question

what do you by data inconsistency

Answer 1

Anything that affects the data integrity results in data inconsistency, especially if you’re using the database as a System of Record.For example, if a customer record in the database has 2 home telephone numbers, consumers of the data will be unable to determine which phone numbers to use.One way of preventing data inconsistency would be to have adequate constraints within the database so that these situationsdon’t arise.In the above example, if there was a constraint that a customer can only have one (home) phone, then while adding the 2nd one, the application (or user) would get an error and would not be added. Additionally, the data integrity would be preserved.

Answer 2

Point-in-time consistency. Point-in-time consistency is an important property of backup files and a critical objective of software that creates backups.
Data consistency means that data values are the same for all instances of an application. This data belongs together and describes a specific process at a specific time, meaning that the…

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