Banco de dados e fole: o que têm em comum

1. Passo 1. Banco de dados — evoluiu de — Hollerith tabulator. Processing large datasets began with tabulators.
2. Passo 2. Hollerith tabulator — utiliza — Punched card. The 1890 census data was encoded on punched cards.
3. Passo 3. Punched card — funciona como — Pinned cylinder. Pins on a cylinder and holes in a card are two ways of recording a sequence for a machine.
4. Passo 4. Pinned cylinder — faz parte de — Realejo. A pinned cylinder sets the tune.
5. Passo 5. Realejo — tem como parte — Fole. Bellows feed air into the pipes.

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