What is one reason to introduce data redundancy into a normalized database design?

You are loading data into a table. Which command can you use to make sure that all data is inserted and duplicates rows are discarded?

Which statement about the TRUNCATE TABLE statement is true?

In data migration, there is often a need to delete duplicate rows as part of data cleanup. Which statement works best?

When working with MySQL cursor, what must you also declare?

Which type of backup includes all the changes made to the data since the last full backup was performed?

What is A in ACID?

Which statement is correct?

With SQL, how can you return the number of records in the 'Persons' table?

Maximum number of constituents for a SET datatype?

Can I create another MySQL instance in the same machine?