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Conventions in Code Examples
Code examples illustrate SQL, PL/SQL, SQL*Plus, or other command-line
statements. They are displayed in a monospace (fixed-width) font and separated
from normal text as shown in this example:
SELECT username FROM dba_users WHERE username = 'MIGRATE';
The following table describes typographic conventions used in code examples and
provides examples of their use.
UPPERCASE
monospace
(fixed-width)
font
Uppercase monospace typeface indicates
elements supplied by the system. Such
elements include parameters, privileges,
datatypes, RMAN keywords, SQL
keywords, SQL*Plus or utility commands,
packages and methods, as well as
system-supplied column names, database
objects and structures, usernames, and
roles.
You can specify this clause only for a NUMBER
column.
You can back up the database by using the
BACKUP command.
Query the TABLE_NAME column in the USER_
TABLES data dictionary view.
Use the DBMS_STATS.GENERATE_STATS
procedure.
lowercase
monospace
(fixed-width)
font
Lowercase monospace typeface indicates
executables, filenames, directory names,
and sample user-supplied elements. Such
elements include computer and database
names, net service names, and connect
identifiers, as well as user-supplied
database objects and structures, column
names, packages and classes, usernames
and roles, program units, and parameter
values.
Note: Some programmatic elements use a
mixture of UPPERCASE and lowercase.
Enter these elements as shown.
Enter sqlplus to open SQL*Plus.
The password is specified in the orapwd file.
Back up the datafiles and control files in the
/disk1/oracle/dbs directory.
The department_id, department_name,
and location_id columns are in the
hr.departments table.
Set the QUERY_REWRITE_ENABLED
initialization parameter to true.
Connect as oe user.
The JRepUtil class implements these
methods.
lowercase
italic
monospace
(fixed-width)
font
Lowercase italic monospace font
represents placeholders or variables.
You can specify the parallel_clause.
Run Uold_release.SQL where old_
release refers to the release you installed
prior to upgrading.
Convention Meaning Example
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