explained in Chapter $3,$ there are many

different versions of the system development life

cycle $($SDLC$).$ Each version is most appropriate in

certain situations. In this case, you wil proceed

quickly through the complete development of an

automated video rental store. A commonly used

SDLC$,$ which wil alow

this rapid journey a

nd wil

demonstrate the use of common development

tools, is adapted from Yourdon $(1988).$ Its analysis

and design phases are described next.

The following steps, which are consistent

with the Yourdon methodology $($Yourdon$,$

$1988),$ make up the analysis and design phases of

the SDLC$.$

$\mathrm{.}1$ Describe the current physical systems:

I d e n t i f y the system's components

$($external en

tities, o

utflows, inflows,

processes, and stores$).$