Provided the tables the logical layer the ansi model

308 Databases Demystified

7. The relational database model:
a. Was first proposed by Dr. E.F. Codd
b. Provides superior flexibility for ad-hoc queries
c. Directly supports one-to-many relationships
d. Directly supports many-to-many relationships
e. Connects database records using physical address pointers

8. The object-oriented database model:
a. Is newer than the relational database model b. Provides superior flexibility for ad-hoc queries

a. Column
b. Index
c. Referential constraint
d. View
e. Table

10. A relationship in the conceptual design is implemented using which database object?

a. Column
b. Index
c. Referential constraint
d. View
e. Table

13. Which database object appears in the external level of the ANSI/SPARC model?