Vendor: Oracle
Certifications: Oracle Database Application Development
Exam Name: MySQL 5.6 Developer
Exam Code: 1Z0-882
Total Questions: 100 Q&As
Last Updated: Mar 24, 2024
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1Z0-882 Q&A's Detail
Exam Code: | 1Z0-882 |
Total Questions: | 100 |
CertBus Has the Latest 1Z0-882 Exam Dumps in Both PDF and VCE Format
1Z0-882 Online Practice Questions and Answers
Which there statements describe valid reasons why queries that use "SELECT" construct are discouraged?
A. SELECT * may cause more data than you need to be read from disk if your application needs only some columns.
B. SELECT * causes more data than you need to be sent via the client/server protocol if your application needs only some columns.
C. SELECT * prevents the use of indexes, so a full table scan for every query.
D. SELECT *causes your application to depend on the columns present when you wrote it , so your application could break if the table structure changes.
E. SELECT * causes the statements to return all rows from the table.
Which statement is true when working with PHP and prepared statement?
A. The mysql extension supports only client-side emulation.
B. The mysql1 extension support client-side emulation.
C. The PDO_MySQL extension supports both client side and server side emulation.
D. The PDO_MySQL extension supports only server side emulation.
The city table has the following structure:
Consider the statement with an incorrect field name:
PREPARE countryBYID FROM `SELECT country FROM city WHERE ID=?, What happens if a prepared
statement named countryByID already exists when the above statement is executed?
A. A duplicate name error will result because a prepared statement with the same name already exists.
B. An unknown column error will result and the old prepared statement definition will remain in effect.
C. An unknown column error will result and no prepared statement named countryByID will exist.
D. A warning will result and the old prepared statement definition will remain in effect.
Consider the content of the class and student tables: Class
Which three queries produce the same result?
A. SELECT * FROM class INNER JOIN student ON class.class_id=student.class_id
B. SELECT * FROM JOIN student LEFT JOIN student ON class. Class.class_id=student.class_id
C. SELECT * FROM class INNER JOIN student WHERE NOT ISNULL (student.class_id)
D. SELECT * FROM JOIN student On class .class_id=student.class_id WHERE NOT ISNULL (student.class_id)
E. SELECT * FROM student RIGHT JOIN class ON class.class_id=student.class_id
You are connected to a MySQL server and using a prepared statement. You accidentally exit your session.
What will happen if you log back in to use your prepared statement?
A. The statement exists, but will need to be deallocated and re-created.
B. The statement exists, but the user variables need to be redefined.
C. The statement can be used, if the MySQL server hasn't been restarted.
D. The statement no longer exists.
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