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SQL

SQL (Structured Query Language) is the standard language for accessing relational databases such as Access, SQL Server, Oracle®, DB2, Informix, Sybase, and Teradata. With the growth of the World Wide Web and the information explosion that comes with it, knowledge of SQL proves to be invaluable for anyone in the IT field because this vast amount of information needs to be stored somewhere, and most of the time some flavor of relational database is the choice. Any experienced webmaster knows that SQL is the true engine for interacting with the database behind scripting languages such as ASP, perl, or PHP. Not only do people with SQL knowledge in good demand in the workplace (a quick search using the keyword 'SQL' on a job-search site such as Headhunter.net and Jobsonline shall validate that), but there are also many projects that need to be completed by people with SQL skills.

So how difficult is it to understand SQL? We think SQL is a language in which one can be fairly proficient in a relatively short period of time, especially when compared to the other 'hot' languages of today such as C++ and Java. In essence, SQL consists of a number of keywords and a number of key concepts.

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