4 The following conventions are used in the synopsis of a command:
5 brackets ([ and ]) indicate optional parts. Braces ({ and }) and
6 vertical lines (|) indicate that you must choose one alternative. Dots
7 (...) mean that the preceding element can be repeated. All other
8 symbols, including parentheses, should be taken literally.
10 Where it enhances the clarity, SQL commands are preceded by the prompt
11 =>, and shell commands are preceded by the prompt $. Normally, prompts
12 are not shown, though.
14 An administrator is generally a person who is in charge of installing
15 and running the server. A user could be anyone who is using, or wants
16 to use, any part of the PostgreSQL system. These terms should not be
17 interpreted too narrowly; this book does not have fixed presumptions
18 about system administration procedures.