Ce que l’on conçoit bien, s’énonce clairement et les mots pour le dire, arrivent aisément. (What is well conceived, can be clearly expressed and the words to say it, turn up effortlessly.)
Nicolas Boileau (1636–1711)
You have reached the part of the book where the mathematical foundation laid down in the first four chapters will be applied. In particular, you’ll see how this can be applied to specify database designs.
Chapter 5 will start with some important stepping stones. We’ll familiarize you with how to formally specify a table and a database state. This chapter will also formally introduce you to the most common table operators: union ...
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