what is the main difference between high and low level
design in sdlc

Answer Posted / kumar mohapatra

HLD- also known as macro level/ system design...
LLD- also known as micro level/ detailed design...

HLD- 2 main components are 1>Functional architecture of application... 2>Database design...
LLD- in this design,for every program logic design is done, documented and unit test plan created...

HLD- participants are design team, review team and client...
LLD- participants are only design team...

HLD- input criteria is Software Requirement Specification(SRS)... Output criteria is database design, functional design and review record...
LLD- input criteria is HLD, which are reviewed and authorized... Output criteria is Program specification and unit test plan...

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