A ____ Attribute Can Be Further Subdivided to Yield Additional Attributes.
CH4
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. The ERD is used to graphically represent the ____ database model.
a. condensed c. logical
b. physical d. conceptual
____ 2. In an ER diagram, primary keys are indicated by ____.
a. bolding c. underlining
b. italics d. a special font
____ 3. The ideal number of attributes used to brand up a primary key is ____.
a. zero c. two
b. one d. half-dozen
____ iv. The ____ attribute(s) brand up the primary central in the table definition:
Class (CRS_CODE, CLASS_SECTION, CLASS_TIME, CLASS_ROOM, PROF_NUM)
a. CRS_CODE c. CRS_CODE and CLASS_SECTION
b. CLASS_SECTION d. There is no primary key
____ five. A ____ attribute can be further subdivided to yield additional attributes.
a. composite c. single-valued
b. simple d. multivalued
____ 6. A ____ attribute can have only one value.
a. composite c. single-valued
b. unproblematic d. multivalued
____ 7. ____ attributes tin have several values.
a. Composite c. Unmarried-valued
b. Simple d. Multivalued
____ 8. A ____ might exist represented with a multivalued aspect.
a. Person's proper name c. Bank business relationship balance
b. Household telephone numbers d. Book title
____ ix. The ____ type of attribute cannot exist created in a DBMS.
a. derived c. simple
b. multivalued d. composite
____ 10. A derived aspect is indicated in the Chen model by a ____.
a. Single line c. Circle
b. Dashed line d. Double line
____ 11. Knowing the ____ number of entity occurrences is very helpful at the application software
level.
a. maximum c. exact
b. minimum d. maximum and minimum
____ 12. In the ERD, cardinality is indicated using the ____ note.
a. (max, min) c. [min ... max]
b. (min, max) d. {min|max}
____ 13. Making certain all ____ are identified is a very important part of a database designer's job.
a. business rules c. derived attributes
b. cardinalities d. relationships
____ xiv. When the PK of one entity does not comprise the PK of a related entity, the human relationship is
____.
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Source: https://www.studocu.com/en-au/document/charles-sturt-university/database-systems/chapter-4-questions/1619823
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