How can you execute SQL statements within a PL/SQL block?

In PL/SQL (Procedural Language/Structured Query Language), you can execute SQL statements within a PL/SQL block using various constructs and techniques. Here is an in-depth explanation of how you can execute SQL statements within a PL/SQL block: 1. SQL Statements within PL/SQL Block: You can directly include SQL statements within the body of a PL/SQL block. SQL statements are typically used to interact with the database, retrieve or manipulate data, and perform various database operations. Here's an example of executing a SQL SELECT statement within a PL/SQL block: ``` sql`DECLARE -- Declare variables to hold result data emp_name VARCHAR2(100); emp_salary NUMBER; BEGIN -- Execute SQL SELECT statement SELECT employee_name, salary INTO emp_name, emp_salary FROM employees WHERE employee_id = 100; -- Process the retrieved data DBMS_OUTPUT.PUT_LINE('Employee Name: ' || emp_name); DBMS_OUTPUT.PUT_LINE('Employee Salary: ' || emp_salary); END; /` ``` 2. Implicit Cursor: PL/SQL provides an implicit cur....