Answer True or False. You do not need to copy the question to your answer sheet. $(1$ points each$)$

$($a$)$ Two relations can share the same schema.

$($b$)$ Data independence means that a progam that uses a database does not need to change if the

database changes.

$($c$)$ In a table of student records, it was observed that no two students have the same name. Thus,

one can conclude that student name is a candidate key.

$($d$)$ A declarative query specifies the precise sequence of steps a database must take to answer a wuery.

$($e$)$ One difference between a relation in Relational Algebra and a table in a SQL database is that the

SQL table may contain duplicate rows.