Read-only databases are ________ updated. Options: A . &nbspalways B . &nbspcommonly C . &nbspseldom D . &nbspnever

Read-only databases are _______

Question

Read-only databases are ________ updated.

Options:

A . always

B . commonly

C . seldom

D . never

Answer: Option D

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Question 1. Needing to assess the validity of assumed referential integrity constraints on foreign keys is a(n) ________ of normaliz....integrity constraints on foreign keys is a(n) ________ of normalization.

Question 2. Normalization ________ data duplication.....

Question 3. When building a database from an existing set of tables, we may safely assume that referential integrity constraints hav....constraints have been enforced on the data we are given.

Question 4. Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BC....severe enough that a table should be normalized into BCNF.

Question 5. We have normalized a table into BCNF if all candidate keys are determinants.....

Question 6. We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table.....

Question 7. One common design problem when designing a database from existing data is the use of a single cell in one column to stor....in one column to store multiple values of an attribute.

Question 8. In all cases, normalization into BCNF is desirable.....

Question 9. Denormalized tables are in BCNF.....

Question 10. We can eliminate modification anomalies with proper normalization that results in tables in BCNF.....

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