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In computing, an abstraction layer or abstraction level is a way of hiding the working details of a subsystem. Examples of software models that use layers of abstraction include the OSI model for network protocols, OpenGL, and other graphics libraries, which allow the separation of concerns to facilitate interoperability and platform independence.
In addition to optimizing code, a hierarchical/recursive meaning of Abstraction level in programming also refers to the interfaces between hardware communication layers, also called "abstraction levels" and "abstraction layers." In this case, level of abstraction often is synonymous with interface. For example, in examining shellcode and the ...
The model partitions the flow of data in a communication system into seven abstraction layers to describe networked communication from the physical implementation of transmitting bits across a communications medium to the highest-level representation of data of a distributed application. Each intermediate layer serves a class of functionality ...
Data abstraction levels of a database system. Physical level – The lowest level of abstraction describes how a system actually stores data. The physical level describes complex low-level data structures in detail. Logical level – The next higher level of abstraction describes what data the database stores, and what relationships exist among ...
Abstraction uses a strategy of simplification, wherein formerly concrete details are left ambiguous, vague, or undefined; thus effective communication about things in the abstract requires an intuitive or common experience between the communicator and the communication recipient. This is true for all verbal/abstract communication.
Design patterns in computer science represent abstract solutions to common software design problems. While they are not abstractions in the same sense as data structures or mathematical concepts, design patterns provide a high-level language for software developers to communicate and implement solutions in a consistent and recognizable way.
As such, high-level applications typically rely on low-level applications to function. In terms of programming, a high-level programming language is one which has a relatively high level of abstraction, and manipulates conceptual functions in a structured manner.
An application layer is an abstraction layer that specifies the shared communication protocols and interface methods used by hosts in a communications network. [1] An application layer abstraction is specified in both the Internet Protocol Suite (TCP/IP) and the OSI model. [2]