Database Q&A

Data modeling may be the most important part of the systems development process because:

a) It is the easiestb) Data are less stable than processes.c) Data characteristics are important in the design

of programs and other systems componentsd) The data in a system are generally less complex than

processes, and play a central role in development2. A business rule:

a) Defines or constrains some aspect of the businessb) Asserts business structurec) Controls or influence the behavior of the businessd) All of the above

3. Business rules should be determined primarily by interviewing executives in the business.

a) Trueb) FalseREASON: Business rules should be determined from many

sources, including policies, manuals, contracts, and brochures.4. The common types of entities are:

a) Strong entitiesb) Weak entitiesc) Associative entitiesd) All of the above

5. A property or characteristic of an entity type that is of interest to the organization is called a(n):

a) Relationshipb) Cross-functionc) Coexisting entityd) attribute

6. A relationship is an association between attributes.a) Trueb) FalseREASON: A relationship is an association between entity

types.7. A good data name should be:

a) Readable, repeatable and technicalb) Meaningful, technical, and uniquec) Repeatable, short, and meaningfuld) readable, unique, and repeatableREASON: These are just a few of the characteristics of a

good data name.