Referential integrity controls relationships between :

The term Incomplete for a UML has the same meaning as which of the following for an EER diagram?

• [A] Overlapping rule
• [B] Disjoint rule
• [C] Total specialization rule
• [D] Partial specialization rule

Which of the following modifications may not succeed?

• [A] Changing a column data type from char to date
• [B] Changing a column data type from numeric to char
• [C] Both of the above actions should succeed.
• [D] Neither of the above actions will succeed.

DFD stands for

• [A] Data flow diagram
• [B] data field diagram
• [C] distribute flow diagram
• [D] disk flow diagram

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.

Features of XML include which of the following?

• [A] The tags are used to describe the appearance of the content.
• [B] Addresses the structuring and manipulation of the data involved.
• [C] Governs the display of information in a Web browser.
• [D] All of the above.