Mastering PL/SQL Concepts

What does PL/SQL stand for?

• Programming Language/Structured Query Language

• Procedural Language/Structured Query Language

• Procedural Language/Simple Query Language

• Programming Language/Standard Query Language

How do you declare a variable in PL/SQL?

• In PL/SQL, a variable is initialized using: data_type variable_name;

• You declare a variable in PL/SQL using the syntax: variable_name data_type;

• You define a variable in PL/SQL with the command: var variable_name;

• To create a variable in PL/SQL, use the format: data_type as variable_name;

What is a stored procedure in PL/SQL?

• A stored procedure in PL/SQL is a command that retrieves data from a database.

• A stored procedure in PL/SQL is a named block of code that performs a specific task and can be executed with parameters.

• A stored procedure in PL/SQL is a type of variable used for data storage.

• A stored procedure in PL/SQL is a temporary code block that cannot accept parameters.

How do you execute a stored procedure in PL/SQL?

• RUN procedure_name(parameter1, parameter2);

• CALL procedure_name(parameter1);

• EXECUTE procedure_name(parameter1, parameter2, ...);

• EXEC procedure_name(parameter1, parameter2);

What is a trigger in PL/SQL?

• A trigger is a user-defined function that returns a value.

• A trigger is a command that manually updates records in a table.

• A trigger is a stored procedure that automatically executes in response to specific events on a database table.

• A trigger is a type of database index that improves query performance.

What are the different types of triggers in PL/SQL?

• Row-Level Triggers

• User-Defined Triggers

• Event Triggers

• DML Triggers, INSTEAD OF Triggers, System Triggers, Compound Triggers

How is exception handling implemented in PL/SQL?

• Exception handling in PL/SQL is done using the TRY block.

• Exception handling in PL/SQL is done using the EXCEPTION block.

• PL/SQL uses the CATCH statement for exception handling.

• Errors in PL/SQL are managed with the ERROR block.

What is a cursor in PL/SQL?

• A cursor is a database object used to retrieve and manipulate data row by row in PL/SQL.

• A cursor is a method for storing large binary files in PL/SQL.

• A cursor is a tool for creating user interfaces in PL/SQL.

• A cursor is a type of variable used for error handling in PL/SQL.

What are the types of cursors in PL/SQL?

• Implicit cursors and explicit cursors

• Named cursors and unnamed cursors

• Static cursors and dynamic cursors

• Temporary cursors and permanent cursors

What is a package in PL/SQL and why is it used?

• A package in PL/SQL is a collection of related procedures and functions that are grouped together for better organization and modularity.

• A package in PL/SQL is a collection of unrelated variables and constants.

• A package in PL/SQL is a type of database table used for storage.

• A package in PL/SQL is a single procedure that performs a specific task.