How do the STRICT_ALL_TABLES and STRICT_TRANS_TABLES mode values deal with bad data?

Solution (By Examveda Team)

This question is about how MySQL handles data that doesn't fit the rules of your database tables.
Imagine your database table has a column for ages, and it's designed to only hold numbers. If someone tries to put a letter or a word in that column, it's considered "bad data."

STRICT_ALL_TABLES and STRICT_TRANS_TABLES are like special settings for your database. They tell MySQL how to behave when it encounters bad data.

Let's look at the options:

Option A: reject them - This is the most accurate answer when using STRICT_ALL_TABLES and STRICT_TRANS_TABLES. If you have these modes on, MySQL will reject any data that doesn't follow the rules of your table. It won't let you insert or update the data if it's wrong.

Option B: accept them - This is incorrect because STRICT_ALL_TABLES and STRICT_TRANS_TABLES are designed to stop bad data from getting into your database.

Option C: change them to the closest legal value and accept - This isn't how these modes work. They don't try to guess what you meant to type.

Option D: change them to the closest legal value and reject - This is partially correct. While MySQL *does* try to change bad data to a legal value, it *doesn't* accept it. If the data can't be converted into a valid format, it will be rejected.

In summary, STRICT_ALL_TABLES and STRICT_TRANS_TABLES are strict modes that prevent incorrect data from entering your database. They reject data that doesn't meet the rules of your table.