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Parameter and Keyword Description:
dynamic_string:
This is a string variable, literal, or expression which represents a SQL statement or the PL/SQL block.
define_variable_name:
This identifies a variable which stores a SELECTED column value.
record_name:
This identifies a user-defined or %ROWTYPE record which stores a SELECTED row.
bind_argument_name:
These identify an expression whose value is passed to the PL/SQL block or dynamic SQL statement.
INTO ...:
This clause, useful only for specifies the variables record, or single-row queries into which the column values are fetched.
USING ...:
This clause specifies the list of bind arguments. If you do not specify the parameter mode, it default to IN. At run time, a few bind arguments in the USING clause substitute the corresponding placeholders in the PL/SQL block or SQL statement.
Information Hiding With the information hiding, you see only the details that are significant at a given level of algorithm and data structure design. The Information hiding
DBMS_OUTPUT: The Package DBMS_OUTPUT enables you to display output from the PL/SQL subprograms and blocks, that makes it easier to test and debug them. The procedure put_ line
Parameter Modes To define the behavior of formal parameters you use the parameter modes. The 3 parameter modes, IN, OUT, & IN OUT, can be used with any subprogram. Though, a
Rephrase Conditional Control Statements When computing a logical expression, the PL/SQL uses short-circuit evaluation. That is, the PL/SQL stops evaluating the expression as s
SQL Operators The PL/SQL uses all the SQL set, comparison, and row operators in the SQL statements. This part briefly describes some of these operators. 1. Comparison Opera
Collections: The collection is an ordered group of elements, all of similar type (for illustration, the grades for a class of students). Each element has an exclusive subsc
Second Step at defining type SID in SQL CREATE TYPE SID AS VARCHAR(5) ; Explanation: TYPE SID announces that a type named SID is being defined to the system.
Relational Operators and Logical Operators It prepares the ground for subsequent sections in which each specific relational operator is paired with its logical counterpart, su
Joining in SQL Joining IS_CALLED and IS_ENROLLED_ON in SQL SELECT * FROM IS_CALLED NATURAL JOIN IS_ENROLLED_ON This is an example of an SQL table expression. I have been
EXCEPTION_INIT Pragma The pragma EXCEPTION_INIT relates an exception name with an Oracle error number. Which allow you to refer to any internal exception by the name and to wri
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