Which tier uses application server

Which of the following is true about Information?

In a relational database, a foreign key is used to:

In the context of databases, what does the term sharding refer to?

Which of the following statements about ACID properties in a DBMS is incorrect?

What does the term "normalization" refer to in the context of database design?

Which normal form deals with the issue of transitive dependencies?

What is the purpose of the SQL "GROUP BY" clause?

Which of the following joins returns all rows from both tables, filling in NULL values for non-matching rows?

What is the full form of DBMS?