Which of the following constraints can be defined only at the column level (on a single column) and not at the table level (on multiple columns)?
He provides access rights of the database to users and defines procedures to recover the database from failures.
Which of the following constraints is used to ensure that all values in a column satisfy certain criteria?
Which of the following SQL statements can be used on a view that is created with the WITH READ ONLY option?
which of the following data types must a column be indexed if the AUTO_INCREMENT attribute is specified?
Which of the following statements can be used to select a database to make it the default database for a given connection to a server?