How many copies of the database schema are typically used in the redesign process?

The collection of information stored in a database at a particular moment is?

• [A] View
• [B] Instance
• [C] Scheme
• [D] None of these

An intrusion detection system does not perform which of the following?

• [A] Tries to identify attempts to hack into a computer system.
• [B] May monitor packets passing over the network.
• [C] May transmit message packets to the correct destination.
• [D] Set up deception systems that attempt to trap hackers.

The number of attributes in relation is called as its .....................

• [A] Cardinality
• [B] Degree
• [C] Tuple
• [D] Row

Which SQL-92 standard SQL command can be used to change a table name?

• [A] RENAME TABLE
• [B] CHANGE TABLE
• [C] ALTER TABLE
• [D] None of the above is correct.

Changing cardinalities in a database is:

• [A] a common database design task.
• [B] a rare database design task, but does occur.
• [C] a database design task that never occurs.
• [D] is impossible to do, so a new database must be constructed and the data moved into it.