When a table is created using existing data from multiple sources,you are likely to find that some data values have never been provided because the values are not known.This is an example of ________.
A) the multivalued,multicolumn problem
B) the inconsistent values problem
C) the missing values problem
D) the general-purpose remarks column problem
Correct Answer:
Verified
Q76: Read-only databases are used for _.
A)updating
B)querying
C)data entry
D)user
Q77: The disadvantages of normalization include _.
A)the elimination
Q78: To count the number of rows in
Q79: The advantages of normalization include _.
A)the elimination
Q80: To limit the number of rows retrieved
Q82: Explain denormalization,and why it may be appropriate
Q83: A missing value is called a(n)_.
A)empty value
B)null
Q84: The SQL keyword IS NULL can be
Q85: Reviewing the work done on a table
Q86: When a table is created using existing
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