Kexi/Handbook/Introduction to Databases/What Is a Database?/da

Hvad er en database?

Du kan definere en database som en samling af data om et emne. Den er organiseret på en måde, som gør det let at bladre igennem informationen, foretage ændringer og tilføje nye emner.

Se diagrammet med et af de tidligere nævnte eksempler: en enkel telefonbog.

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Ovenstående billede viser to kontakter, som hver er repræsenteret på sit eget kort. Det ses, at sådan et kort kan udgøre en række i en tabel.

Contacts table

Name	Tel No.
Joan	699 23 43 12
Adam	711 19 77 21

Terms and definitions: A single data which constitutes a part of a greater collection can be called a row or more professionally a record. The collection is normally called a table. Moreover, the most natural name for the table is one describing the data it offers/stores which is Contacts. Furthermore, each row in the table consists of columns often also called fields. In the table Contacts there are two columns (fields): Name and Tel No..

For simple uses a single table can make up a database. Many people consider these two equivalent. As you will see, for real databases we usually need more than one table.

To sum up, you have already got a simple database with one table Contacts.

Note

Check content at www.zoho.com/creator/database-software-vs-spreadsheet.html

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