Terminology. Replication in computing can refer to: Data replication, where the same data is stored on multiple storage devices; Computation replication, where the same computing task is executed many times.Computational tasks may be: Replicated in space, where tasks are executed on separate devices; Replicated in time, where tasks are executed repeatedly on a single device

A data access layer (DAL) in computer software is a layer of a computer program which provides simplified access to data stored in persistent storage of some kind, such as an entity-relational database.This acronym is prevalently used in Microsoft environments.. For example, the DAL might return a reference to an object (in terms of object-oriented programming) complete with …