recording information (flow charts)

Post on 29-Nov-2014

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An excerpt of "System Analysis" which explains program flowcharts, system flowcharts & DFDs with examples.

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Flow Chart

Algorithm

• Flowcharts were introduced by Frank Gilberth in 1921, and they were called “Process Flow Charts” at the beginning . Allan H. Mogensen is credited with training business people on the use of Flowcharts. Wikipedia has a great summary about the history of flowcharts, read more in this wiki section.

•A flowchart is a type of diagram that represents an algorithm or process, showing the steps as boxes of various kinds, and their order by connecting them with arrows. This diagrammatic representation illustrates a solution to a given problem. Process operations are represented in these boxes, and arrows; rather, they are implied by the sequencing of operations. Flowcharts are used in analyzing, designing, documenting or managing a process or program in various fields.

Data Process Decision

Start/Stop

DocumentDirect Access Storag

e

Stored Data

Manual InputInternal Storage

Predefined Process

Sequential Access Storage

Manual Operatio

n

Vacancy arose in one of the leading companies around. The board of directors have arranged a meeting to decide how will they’ll recruit a new

employee; internally or externally.

Program flowchart focuses on the process

of solving the corresponding

problem. It gives explicit details on how many data input, the

process being done and the data output.

Program flowchart focuses on the process

of solving the corresponding

problem. It gives explicit details on how many data input, the

process being done andthe data output.

Job Descriptio

n

Publish on Web (Advertise)

Externally?START

Job Specificatio

n

Read CV/Resum

e

Does it Match the

Job Specificatio

n

Interview the Candidate

Is he/she Suitable for the

Job

Vacancy Filled

STOP

System flowchart, on the other hand, focuses on the input & output

rather than the detailed process itself.

It’s more simpler than program flow chart in terms of details but it does show how data isbeing input and output.

System flowchart, on the other hand, focuses on the input & output

rather than thedetailed process itself.It’s more simpler than program flow chart in terms of details but it does show how data is being input and output.

Recruitment & Selection

Job Description & Specification

CV/Resume New Employee's

Data

Recruitment & Selection

Data flow diagram is different from the two

flowcharts we dealt with earlier.

This diagram illustrates data and

how does it flow fromone field to another.

,This diagram obviously, focuses on

the data.

Data flow diagram is different from the two

flowcharts we dealtwith earlier.

This diagram illustrates data and

how does it flow from one field to another.

This diagram, obviously, focuses on

the data.

Firm

Firm’s Website

Newspaper

Advertisement Process

Job Description &

SpecificationAdve

rtise

men t

Advertisement

Job

Application

Job Application

Advertisement Process

Job Description &

SpecificationAdve

rtise

men t

Advertisement

Job

Applicatio

n

Job Application

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