When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the: third step. fourth step. second step. first step. TRUE ANSWER : ? YOUR ANSWER : ?
Most of the time, modification anomalies cause problems that are severe enough that a table should be normalized into BCNF. False True TRUE ANSWER : ? YOUR ANSWER : ?
When building a database from an existing set of tables, we may safely assume that referential integrity constraints have been enforced on the data we are given. True False TRUE ANSWER : ? YOUR ANSWER : ?
Read-only databases are ________ updated. always seldom never commonly TRUE ANSWER : ? YOUR ANSWER : ?
When building a database from an existing set of tables, we still need to consider normalization principles. False True TRUE ANSWER : ? YOUR ANSWER : ?
Each answer below shows example data from a table. Which answer is an example of the multivalue, multicolumn problem? Three rows have the values Brown Small Chair, Small Chair Brown, and Small Brown Chair in the same column. Three rows have the values Brown, NULL, and Blue 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 columns have the values 534-2435, 534-7867, and 546-2356 in the same row. TRUE ANSWER : ? YOUR ANSWER : ?
When you are given a set of tables and asked to create a database to store their data, the first step is to create the new database. False True TRUE ANSWER : ? YOUR ANSWER : ?
We use the SQL construct COLUMNS(*) to determine the number and type of columns in a table. False True TRUE ANSWER : ? YOUR ANSWER : ?
Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems? The inconsistent values problem The general-purpose remarks column problem The missing values problem The multivalue, multicolumn problem TRUE ANSWER : ? YOUR ANSWER : ?
Normalization requires programmers to write more complex SQL. False True TRUE ANSWER : ? YOUR ANSWER : ?