Imagine you and your friends are all playing with the same toy at the same time. You would want to make sure that you don't all try to play with the toy at the same time so that nobody gets hurt or breaks the toy. This is kind of like what happens when different parts of a computer program try to access the same data at the same time.
Distributed concurrency control is like putting a system in place to make sure that everyone plays with the toy safely and no one gets hurt or breaks it. In computer programs, this means making sure that different parts of the program don't all try to access or change the same data at the exact same time. It's important to do this because if everyone tries to do things at the same time, the program might not work properly or even crash.
So, to make sure that everything runs smoothly, the program uses something called distributed concurrency control. This is like having a set of rules that everyone follows to make sure that they take turns playing with the toy. In the computer program, this means that different parts of the program take turns accessing and changing the data they need, based on a set of rules, so that everyone can do what they need to do without getting in the way of the others.
Overall, distributed concurrency control is like a way to make sure that everyone gets a fair shot at playing with the toy without getting hurt, and in computer programs, it helps make sure that everything runs smoothly without crashing or malfunctioning.