SQL, Structured Query Language, is the lingua franca of the relational database environment. SQL is the driving force behind nearly every database product available to developers and end users today Depending on the audience for which the product is designed, the SQL may be hidden behind the scenes, doing its work through a point and click interface rather than the typing of a long SQL statement. One of the major benefits of SQL is its portability between vendors. Though there are numerous, vendor-specific extensions and dialects that color the language, the core concepts and principles of SQL remain constant.
This chapter presents the concepts of SQL in a reference fashion, focusing on Borland's Local SQL implementation. Upon completion of this chapter you will be well versed in this implementation of SQL and be prepared to work in multi-tier environments with other SQL dialects.
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