[db tech showcase tokyo 2015] spider web system by wiliiam inmon

SPIDER WEB SYSTEMS

a presentation by

W H Inmon

Copyright Inmon Consulting Services, 2008C

in the beginning there was paper tape

then there were punched cards

then there was

magnetic tape

processor

then came

batch processing

and master files

processor

and then came reports

but it turned out that there were major

problems with magnetic tape as the

predominant storage media

- oxide fell off the tapes

- to get to 1 record you had to access 100%

of all records

soon magnetic disk storage replaced disk storage

with disk storage, data could be accessed directly

processor

and with the advent of dbms,

online applications were born

processor

soon online applications

sprang up everywhere

and for a while end users were happy

but soon it became obvious that data in one application

was needed in another application

and soon individual elements of data began to be

passed among applications

but through all of this the end user was still not

satisfied

it was suggested that the end user could take his/her

destiny in his/her own hands by taking data and using a pc

soon personal computers found their way into

the information processing landscape

and at the corporate level it was suggested that the end users

could take control with a 4GL

appl4GL

and soon 4GL’s were everywhere

appl4GL

and soon it was discovered that 4GL processing needed

data. Data was extracted by means of an extract program

appl4GL

and one day the organization woke up and discovered

it had a big mss on its hands – the spider web environment

a real spider’s web environment

what’s so bad about a spider web?

the same data is found

everywhere – no one really

knows what the correct

value of data is

let’s make a change to data

not only do we have to make changes everywhere,

we have to coordinate those changes as well

the cost of maintenance

spirals out of control

the spiders web environment is no foundation

for information systems to build on

[db tech showcase tokyo 2015] spider web system by wiliiam inmon

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