The following typographical conventions are used in this book:


Indicates a SQL or PL/SQL keyword


Indicates a user-defined item, such as a table name or a column name, in a SQL or PL/SQL statement


Indicates URLs, emphasis, or the introduction of new technical terms

Constant width

Used for code examples and for in-text references to table names, column names, regular expressions, and so forth

Constant width bold

Indicates user input in code examples showing both input and output

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