Conventions Used in This Book
The following typographical conventions are used in this book:
- Italic
Used for filenames, directory names, URLs, the first use of technical terms, and occasional emphasis.
-
Constant width Used for syntax models and code examples.
-
Constant width italic In syntax models, indicates an element (e.g., a filename) you supply.
-
Constant width bold Used in examples that show interaction between an Oracle utility (e.g., SQL*Plus, RMAN) and a user; commands typed by the user are shown in bold, while output from the program is shown in normal text. Bold is also used to show defaults.
- UPPERCASE
In syntax models, generally indicates keywords.
- Lowercase
In syntax models, generally indicates user-defined terms, such as variables and parameters.
- [ ]
In syntax models, square brackets enclose optional items
- { }
In syntax models, curly braces enclose a set of items from which you must choose only one.
- |
In syntax models, a vertical bar, or pipe, separates the items enclosed in curly brackets, such as {VARCHAR2 | DATE | NUMBER}.
Tip
Indicates a tip, suggestion, or general note. For example, we’ll tell you if a certain feature is version-specific.
Warning
Indicates a warning or caution. For example, we’ll tell you if a certain operation has some kind of negative impact on the system.