SDLC is a "Software development Life cycle". its specify  the different stages into the software development.

• System Requirements Analysis.
•  Feasibility study
• Systems Analysis and Design
• Code Generation
• Testing
• Maintenance
• Implementation

SDLC: Software Development Life Cycle.

SDLC is an networking protocol developed, I believe by IBM, in the 1970's and is the precursor to HDLC that is a subset of SDLC that was used later in the 80's. This protocol is still used today and is very stable.

SDLC is software Development Life Cycle or System Development Life cycle.

it contain different phases like

1. Requirement Analysis
2. Designing
3. Coding
4. Testing
5. Implementation
6. Maintenance.

It will support the models for developing sytem or software by using

1. Water Fall Model
2. Spiral Model
3. Prototype Model
4. Agile Model etc.

Software Development Life Cycle(SDLC) is a process of developing any software application that falls under various stages, 1) Analysis, 2) Design, 3) Development, 4) Testing, 5) Maintenance. Though various software methodologies available, user can obtain a respective methodology that suits to the project. they are 1. Waterfall Model, 2. Prototype Model, 3.Spiral Model.,etc.

SDLC is a system development life cycle it is a process through which any software should passed befor implimented it contains various stages

System Development Life Cycle and there are different methodologies from Agile,Waterfall and V-model to mention just a few.