There are six Main stages of SDLC::::::
1)Requirement
In this phase a techno team take a requirements form a customer by meeting what they actually wantor what they need in there product.
2) Analysis:
In this requirements are converted into documents and covers all the customer requirements Finally it will approved by head or any senior persons of the customerside After approvel the requirements are nail down and the devlopeing process is start right from there.
3) Design
In this phase the design of the product is prepared i.e all the requirements are converted into the architechture design.
3) Coding
in this phase all the requirements of the customer are converted into the code form.
4) Testing
In this phase the software under devlopement is tested for quality of the product that the product we are builting is error free or a quality product.
5) Maintance:
this phase the maintance of the product is carried outat preasent or future.