The article is very much an introduction to databases. That is to say, Tero doesn't get into much detail. He does however, cover four areas: SQL, websites/databases, scripts, and querys.
He explains that SQL is an acronymn for Structured Query Language. This is apparently the language in which relational databases speak to one another. Its operations look similar to HTML, but the similarities end there. Tero mentioned that popular database software programs use SQL but hide them behind the user interface.
He mentions briefly the relationship websites can have with databases. The only use for this I saw, for companies, based on his explanation was the idea of constantly having access to company records and orders via an intranet. With respect to his ideas on queries, the explanation was rather simple. He only says that they can be used to retrieve specific data. He also shows what a stringed query would look like in SQL. However, the explanation and examples ... and subsequent explanation of the examples are sparse.
The entire article seemed like an abstract or executive report that would be given to a company president, with the intent of convincing them of the necessity of using a database.
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