Which type of variable must be declared before it is used in a trigger?
A.
PL/SQL variable
B.
Form item
C.
global variable
D.
system variable
E.
parameter
Explanation:
PL/SQL is the language used in Forms triggers and program units.
PL/SQL lets you declare variables and constants, then use them in SQL and procedural
statements anywhere an expression can be used. You must declare a constant or variable before
referencing it in any other statements.
Variables can have any SQL datatype, such as CHAR, DATE, or NUMBER, or a PL/SQL-only
datatype, such as BOOLEAN orPLS_INTEGER.
Note:PL/SQL’s data types correspond with SQL’s column types, making it easy to interchange PL/SQL
variables with data inside a table.