For example, the first row of the table represents a 30-year-old male whose name is Karl Gauss, who lives at postal code 19107, and whose ID number is 119. Each line in the table is a record, or sometimes a row or tuple. The names of the fields are LASTNAME, FIRSTNAME, ID, POSTAL_CODE, AGE, and SEX. Here is an example table: LASTNAME FIRSTNAME ID POSTAL_CODE AGE SEX Each row of a table is a record about one person or thing the record contains several pieces of information called fields. Relational databases started to get to be a big deal in the 1970’s, andthey’re still a big deal today, which is a little peculiar, because they’re a 1960’s technology.Ī relational database is a bunch of rectangular tables. Mark-Jason Dominus Short guide to DBI (The Perl Database Interface Module) General information about relational databases
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