please answer these questions from 10 to 17 10. Connectivity\'s and cardinalitie

Question

please answer these questions from 10 to 17

10. Connectivity's and cardinalities are established by concise statements known as business rules. a, True b. False database as viewed by the end user. 11. The entity relationship diagram (ERD) represents the a. condensed b. physical d. conceptual implementation notation of entity-relationship modelling can be used for both conceptual and 12. The modeling a. Bachman. b, UML. d. Crow's Foot c. Chen s the set of possible values for a given attribute 13, A(n) a. domain b, range c. identifier key attribute(s) 14, Ideally, an entity identifier is composed of a, three b, one c, two d. six additional attributes. 15. A attribute can be further subdivided to yield composite simple c. single-valued d. valued 16. A attribute is one that cannot be subdivided. a. composite b. simple c. single-valued d. multivalued relationships and multivalued attributes. 17. The conceptual model can handle a. 1:1 b. M:N c. I M d. 1:N

Explanation / Answer

10.ans) a. True Connectivity and Cardinality are Established by very concise statements known as business rules

11.ans) d. conceptual. The entity relationship diagram(ERD) represents conceptual database as viewed by end user

12.ans) d. crow’s Foot

13.ans) a. Domain is the set of possible values for a given attribute.

14.ans) b.one An entity identifier is composed of one attribute(s)

15.ans) a. composite attribute can be further subdivided to additional attribute

16.ans) a. simple attribute cannot be subdivided to additional attribute

17.ans) c. 1:M the conceptual model can handle 1:M relationships and multi valued attributes

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