How does PL/SQL distinguish between different exceptions in the EXCEPTION section?By using the RAISE statementBy using conditional statementsBy using error codes

PL/SQL distinguishes between different exceptions in the EXCEPTION section by using error codes. Each exception has a unique error code associated with it. When an exception is raised, PL/SQL handles it by looking at the error code and executing the corresponding exception handling code in the EXCEPTION section.

Here is a step-by-step explanation:

1. An exception is raised: This can happen due to a variety of reasons such as a division by zero, a null value in a place where it's not allowed, etc.

2. PL/SQL looks at the error code: Each exception has a unique error code associated with it. PL/SQL looks at this error code to identify which exception has been raised.

3. PL/SQL executes the corresponding exception handling code: In the EXCEPTION section of the PL/SQL block, different exception handling codes can be written for different exceptions. PL/SQL executes the code that corresponds to the error code of the raised exception.

Note: The RAISE statement is used to explicitly raise an exception in PL/SQL. It's not used to distinguish between different exceptions in the EXCEPTION section. Similarly, conditional statements are used to control the flow of execution in a PL/SQL block, not to distinguish between exceptions.