What is the consistency of data?

Data consistency is the process of maintaining uniform information when it moves through the network and between different applications on your computer. There are usually three types of data consistency: point in time consistency, transaction consistency and application consistency. Ensuring that the computer network has all three elements covered with data consistency is the best way to ensure that the data is not lost or damaged because it travels throughout the system. If there are no data consistency, there is no warranty that any system information is uniform over the entire width of the computer network. This prevents data loss during system crashes, incorrect downtime and other problems in the network. It works by refers to pieces of system data through time stamps and other consistency brands, allowing the system to be restored to a specific moment in time with each piece of data in its original location. There would be no guarantee without a time consistency that all information about the crashed computer could be restored to Jehuhof a preliminary state.

Transaction Consistency is a consistency of a piece of data across a working transaction on a computer. For example, a banking program could originally require the balance of the initial end user account. From now on, the whole program relies on the original balance of the balance that remains consistent in the program memory. If the original balance is $ 50,000 in US dollars ($ 50,000) and the problem in the system changes that a computer is without the consistency of transactions to $ 75,000. Without the consistency of the transaction, nothing entered into the program remains reliable.

Applications consistency is nothing but transaction consistency between programs. For example, if the King proceedings communicate with a tax program on a computer, the consistency of applications means that information moving between programs will remain in its original state. Without the consistency of applications there are the same problems as well as in the consistency of the wrongTransaction: There is no way to find out whether the value entered in the system remains correct over time.

The primary advantage to ensure data consistency maintains the integrity of information stored on a computer or network. Without all three types of consistency, we cannot find out whether the data stored on the computer today will be the same after an accident, installation or other main system events. Therefore, maintaining consistency is one of the primary goals for all computer -based computer programs.