Question 12 Not yet answered. Marked out of 0.50 P Flag question Characteristics of a database system include O a. Providing security and authorization mechanisms Ob. Providing storage structures for efficient query processing Oc. All the choices are correct Od. Providing backup and recovery mechanisms Time left 1:26:08
Question 13 Not yet answered Marked out of 0.50 Flag question PREVIOUS PAGE In the three-schema architecture, which schema can have multiple views? a. Conceptual schema Internal schema None of the choices are correct. O b. Oc. Od. External schema Time left 1:25:56 NEXT PAGE
Question 14 Not yet answered Marked out of 0.50 P Flag question. Time left 1:25:46 Which level in the 3 schema database architecture describes the part of the database that is of interest to a particular user group? O a External level O b. None of the choices are correct Oc Conceptual level Od. Internal level
Question 15 Not yet answered Marked out of 0.50 P Flag question specifies some restrictions on valid data. a. Cardinality ratio. O b. None of the choices are correct OC. Validity O d. Constructs Time left 1:25:32
Question 16 Not yet answered Marked out of 0.50 Flag question Which is used to specify the conceptual schema of a database? O a. None of the choices are correct Ob. DML O c. DOL Od. DDL Time left 1.25:17
Question 12 Not yet answered. Marked out of 0.50 P Flag question Characteristics of a database system include O a. Provi
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