This appendix describes the notation conventions used in this book.
| Convention | Description |
|---|---|
| Syntax Diagrams |
Describes SQL syntax form, including options. |
|
Square braces in the text |
Represent options. The indicated parentheses are required when you specify options. For example: DECIMAL [(n[,m])] means the decimal data type can be defined optionally:
You cannot specify scale without first defining precision.
The values for n and m are integers in all cases. |