Electronic Data Processing

The Modern Era of Databases
The movement towards the use of the Database Management System

Alex P. Pasion, MIT Instructor

Topics
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Why is there a need to study File Processing and DBM?
Historical Perspective.

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History of Database Processing.

Preliminaries
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Why is there a need to study File Processing and DBM?

Why do we use Databases?
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Simply because of ourselves and there is always something that happens around us.
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Collect Data Use and Reuse data

Historical Perspective

Historical Perspective

Historical Perspective

Historical Perspective

The Electronic Age:

Diskette
Punch Card

Why do we Humans desire Databases?
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Man has always had the desire to record everything around him
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The more things we record, the more we need for storage

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And these records are desired to be shared and re-used.
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The more we are involved in activities that needs information, the more we need the storage to be accessible and faster retrieved by several people.

The Paper-Filing Cabinet Database
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Trivia
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In 1790, the US decided to record census data (3.9 million people) In 1880, it took the US 7 years to tabulate the recorded data 1890, the population increased by 12 million 1890, the US decided to use tabulating machines using computer (punch cards), tabulation took only 2-3 months.

The Electronic File Database

The issues that faced File Processing
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Separation and isolation of data Duplication of data Data dependence Incompatible file formats Fixed Queries/Proliferation of application programs

The Birth of the

Database Management System

So now, what is a Database?
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A shared persistent, organized, structured storage of collected interrelated data that has purpose
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It may be but not just STORAGE It may be but is not just for RETRIEVAL It is about PURPOSE and the need for generation of meaningful INFORMATION

History