Question
Smart systems are called "smart"
becauseSolution
The location-based app downloaded to a GPS-enabled smartphone is an example of a smart system because it presents the users with options based on his or her location, which is sensed by the location-based app.
Which SQL command is used to remove a table completely?
A materialized view differs from a normal view because it:
To rename a column in a SELECT query result, you use:
Which SQL constraint ensures a column cannot have NULL values?
In PL/SQL, what type of parameter allows a procedure to both receive a value from the calling environment and return a modified value back to it?
Which of the following statements about SQL `INDEXES` is generally TRUE?
Which SQL keyword is used to eliminate duplicate rows in a query result?
What is the output of this SQL snippet if the price column contains NULL values?
SELECT SUM(price) FROM products;
Which SQL operator is used to search for a pattern in a column?
Which SQL clause is used to group rows?