The Seven Phases of the Systems Development Life Cycle (SDLC):

The Seven Phases of the Systems Development Life Cycle :

1. Information Gathering : In this phase Bussiness Analyst will gather all the information from customer requirement and prepare BRS/CRS/URS(Buiseness/Customer/User Requirement Specification) document. Mainly this done by Buisness Anlayst as they are the one who are completely involved in SDLC.

2. Analysis : In this phase Senior Business Analyst will prepare SRS(Software Requirement Specification). The Features and functions are put in the project are determined.

3. Design : Actual flow of the project is done here. Deciding upto logical functionality, ER Diagram , Flow chart etc are made. Cheif Architect will prepare HLD and LLD(High Level Document and Low Level Document)

• HLD : Defines the overall Hierarchy of the function.Example : Login into Net Banking. From the root level to the least level is defines in HLD.
• LLD: Internal logic of the project is defined. Focuses on the internal functionality of the program. Each and every module logic is defined.

4. Code : Based on the design document , small-small modules are prepared . All the modules are summed together to form a .exe. Unit testing , integration testing & white box testing comes in this phase.       

5. Testing : Actuall system testing take place here.

6. Implementation : All sr.department will release the product .

7. Maintenance : In maintenance the maintenance team will change the software if necessary.