40. Every table in a normalized database has a ________. a. one-to-one relations

Question

40. Every table in a normalized database has a ________. a. one-to-one relationship between entities b. single theme c. foreign key d. specialized query format

41. Which of the following is true about the database development process? a. The easiest time to change the database structure is during the data modeling stage. b. Changing a relationship from 1:N to N:M in an existing database is simply a matter of changing notations. c. User review of the data model is avoided as it is not helpful in data modeling. d. A database is a model of how the developers view their business world.

42. Which of the following is a characteristic of in-house hosting? a. speedy development b. superior adaptability to fluctuating demand c. control of data location d. possibly the best disaster preparedness

43. Which of the following is NOT true? a. A domain name is a worldwide-unique name that is affiliated with a public IP address. b. Web servers run on a server-tier computer and manage traffic by sending and receiving Web pages to and from clients. c. Cloud-based hosting involves high dependency on vendor. d. Bluetooth is a wireless protocol designed for transmitting data over short distances, replacing cables.

Explanation / Answer

40. answer :- b. single theme

explanation:- every database tabel is bound to single purpose... suppose the table contains the data about employes in an enterprise...contains related data to employe details...

41.answer:- a.The easiest timeto change the database structure is during the data modelling stage.

explanation:- In data modelling stage we have database schema only... we can easily modify it..

42.answer:-d.possibly the best disaster preparedness...

43.answer:-b.Web servers run on a server-tier computer and manage traffic by sending and receiving Web pages to and from clients

explanation:-At the client side, the user's PC executes scripts in Web pages...not sends web pages...

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