Multivalued dependencies create harmless anomalies that should be noted, but do not always need to be eliminated. True False TRUE ANSWER : ? YOUR ANSWER : ?
When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the: first step. third step. fourth step. second step. TRUE ANSWER : ? YOUR ANSWER : ?
One common design problem when designing a database from existing data is the presence of missing values, called blank values, in received data. True False TRUE ANSWER : ? YOUR ANSWER : ?
Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems? The multivalue, multicolumn problem The missing values problem The inconsistent values problem The general-purpose remarks column problem TRUE ANSWER : ? YOUR ANSWER : ?
Creating a read-only database is a task that is ________ assigned to beginning database professionals. never commonly always seldom TRUE ANSWER : ? YOUR ANSWER : ?
When assessing the table structure of an acquired set of tables with data, accessing the validity of possible referential integrity constraints on foreign keys is (part of) the: first step. third step. second step. fourth step. TRUE ANSWER : ? YOUR ANSWER : ?
One common design problem when designing a database from existing data is the use of a single cell in one column to store multiple values of an attribute. False True TRUE ANSWER : ? YOUR ANSWER : ?
Each answer below shows example data from a table. Which answer is an example of the missing values problem? Three columns have the values 534-2435, 534-7867, and 546-2356 in the same row. Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column. One row has the value "He is interested in a Silver Porsche from the years 1978-1988" in a column. Three rows have the values Brown, NULL, and Blue in the same column. TRUE ANSWER : ? YOUR ANSWER : ?
One common design problem when designing a database from existing data is the use of a general-purpose remarks column in the received data. True False TRUE ANSWER : ? YOUR ANSWER : ?