The document discusses the use of triggers in database management, clarifying that they are not limited to updating table values but also serve various purposes such as generating derived columns and enforcing integrity. It also mentions that PL/SQL contains a declare block specifically for variable declarations prior to the execution of code. Additionally, it includes true or false questions regarding these topics with the correct answers provided.

1. Triggers can only be used to update table values. PL/SQL blocks have a section used to declare
variables. True False
Solution
Please find the answers below:
1) False; triggers are not only used to update the table values, but also they are being used in
many places like: generating derived column, enforcing referential integrity, imposing security
authorizations, etc...
2) True; PL/SQL has a dedicated section where the variables are being declared. The blocks
name is DECLARE block, which comes before the actual code of statements which is defined in
a BEGIN - END blocks.