The following typographical conventions are used in this book:
Indicates filenames, directory names, and URLs. It’s also used for emphasis and for the first use of a technical term.
Used when referring, by number, to a best practice described in this book (e.g., [BIP-04: Handle expected and named exceptions when performing file I/O.]).
Indicates examples and to show the contents of files and the output of commands.
Constant width bold
Indicates code entered by a user (e.g., via SQL*Plus) or to highlight code lines being discussed.
In code examples, indicates PL/SQL keywords.
In code examples, indicates user-defined items (e.g., variables).
This icon designates a note, which is an important aside to the nearby text. For example, I’ll use this icon when suggesting the use of an alternative feature.
This icon designates a warning relating to the nearby text. For example, I’ll use this icon when a particular feature might affect performance or preclude use of some other feature.