What is the difference between replication and one-way synchronization in relation to databases? Here is what I found about replication :

Replication (from lat. Replico-repeat) is the replication of data changes from the main database server on one or several dependent servers. The main server will be called the master, and dependent servers - replicas.

and about one-way synchronization :

One-way synchronization. The content of one base (master) is copied to another base (slave). In MySQL, synchronization of databases on different servers is used to replicate tables, create test and backup databases, backup MySQL, etc.

According to these definitions, it seems that these concepts mean the same thing.

    1 answer 1

    Data synchronization - eliminating the differences between two copies of data. It is assumed that previously these copies were the same, and then one of them, or both, were independently modified.

    Replication is a process that means copying data from one source to another (or to many others) and vice versa.

    In the context of this particular example, they are one and the same. In a broader sense - these concepts mean different processes.

    UPD

    Synchronization is the goal. Replication is the way to achieve it.

    You can synchronize without replication. A contrived example: it is necessary to synchronize a table containing two numbers from 1 to 100 in two databases. Replication is applicable here, but you can completely do without it.

    You can use replication, the purpose of which is not to synchronize data. For example, a trigger hangs on the plate, multiplying each INSERT field by two. Replication will be - synchronization is not very.

    • and in what case do these concepts mean different processes? I'd love to see an example - Ksenia
    • @Ksenia for example, I can synchronize my and your clocks. Exactly after 20 seconds, put on them 20:15:11 - rjhdby
    • How does this example relate to databases? :) - Ksenia
    • @Ksenia I actually wrote for nothing that "In the context of this particular example is the same thing." As for abstract thinking, he updated the answer. - rjhdby