What are the 3 types of parameters in a PL SQL procedure?
PL/SQL procedure parameters can have one of three possible modes: IN, OUT, or IN OUT. PL/SQL function parameters can only be IN. An IN formal parameter is initialized to the actual parameter with which it was called, unless it was explicitly initialized with a default value.
What are the parameters in PL SQL stored procedure?
The optional parameter list contains name, mode and types of the parameters. IN represents the value that will be passed from outside and OUT represents the parameter that will be used to return a value outside of the procedure. procedure-body contains the executable part.
How do you pass a parameter to a procedure in PL SQL?
The IN OUT parameter allows us to pass values into a procedure and get output values from the procedure….General syntax to pass a IN parameter is
- param_name1, param_name2… are unique parameter names.
- datatype – defines the datatype of the variable.
- IN – is optional, by default it is a IN type parameter.
What is parameters in PL SQL?
Parameter: The parameter is variable or placeholder of any valid PL/SQL datatype through which the PL/SQL subprogram exchange the values with the main code. This parameter allows to give input to the subprograms and to extract from these subprograms.
What is procedure in Plsql?
A PL/SQL procedure is a reusable unit that encapsulates specific business logic of the application. Technically speaking, a PL/SQL procedure is a named block stored as a schema object in the Oracle Database.
Which parameters are used in procedure?
Parameters are used to exchange data between stored procedures and functions and the application or tool that called the stored procedure or function: Input parameters allow the caller to pass a data value to the stored procedure or function.
What are procedures in PL SQL?
A stored procedure in PL/SQL is nothing but a series of declarative SQL statements which can be stored in the database catalogue. A procedure can be thought of as a function or a method. They can be invoked through triggers, other procedures, or applications on Java, PHP etc.
Is PL SQL same as stored procedure?
PL/SQL is Oracle’s version of SQL. Both are ANSI SQL compliant, but contain additional capabilities that are not in the standard. A Stored Procedure is a prepared SQL statement that is stored on the database server, and can be reused by calling it.
What is procedure in PL SQL?
A procedure is a group of PL/SQL statements that you can call by name. A call specification (sometimes called call spec) declares a Java method or a third-generation language (3GL) routine so that it can be called from SQL and PL/SQL. The call spec tells Oracle Database which Java method to invoke when a call is made.