When assessing the table structure of an acquired set of tables with data, determining functional dependencies is (part of) the: fourth step. second step. third step. first step. TRUE ANSWER : ? YOUR ANSWER : ?
The design guidelines and priorities for read-only databases are different because read-only databases are never updated. 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 : ?
Read-only databases are ________ updated. commonly always seldom never 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. 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? 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. 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. TRUE ANSWER : ? YOUR ANSWER : ?
When assessing the table structure of an acquired set of tables with data, counting the number of table rows is (part of) the: second step. first step. fourth step. third step. TRUE ANSWER : ? YOUR ANSWER : ?
One common design problem when designing a database from existing data is the presence of inconsistent values in the received data. False True TRUE ANSWER : ? YOUR ANSWER : ?
When assessing the table structure of an acquired set of tables with data, determining foreign keys is (part of) the: fourth step. third step. first step. second step. TRUE ANSWER : ? YOUR ANSWER : ?
We have normalized a table into BCNF if all candidate keys are determinants. False True TRUE ANSWER : ? YOUR ANSWER : ?