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Guide for MySQL 8.0 Database Developer

Quiz MySQL 8.0 Database Developer

Free Test
/ 10

Quiz

1/10
Examine these my.cnf settings:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 9-2952469805



Examine this entry from /data/slow.log


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 10-2647046365



Which option is also set in my.cnf?
Select the answer
1 correct answer
A.
log_queries_not_using_indexes
B.
log slow_admin_statements=1
C.
log_queries_not_using_indexes=ON
D.
log_throttle_queries_not_using_indexes=100

Quiz

2/10
Examine these statements:
SET collation_connection=utf8mb4_0900_as_cs;
SELECT STRCMPCAlice', UCASE ('Alice* )) ;
What is displayed?
Select the answer
1 correct answer
A.
0
B.
ERROR: 1267 (HYOOO): Illegal mix of collations
C.
-1
D.
NULL
E.
1

Quiz

3/10
Examine these commands and output:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 2-3530635817










Which is true?
Select the answer
1 correct answer
A.
Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
B.
A new view is created because the previous was dropped on execution of the drop table
statement.
C.
It returns an error because the CREATE TABLE statement automatically recreated the view.
D.
It returns an error because the DROP TABLE statement did not drop the view.

Quiz

4/10
Which select statement returns true?
Select the answer
1 correct answer
A.
SELECT NULL <> NULL;
B.
SELECT NULL <=> NULL;
C.
SELECT NULL = NULL;
D.
SELECT NULL := NULL;

Quiz

5/10
Examine the structure of the emp table:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 3-51460582



Examine the structure of the emp_vu1 view based on the emp table:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 4-837496274



Now, examine this statement:
mysq1> INSERT INTO emp_vul VALUES ('Alice',20000) ;
What is true about executing the statement?
Select the answer
1 correct answer
A.
It inserts a row in the emp table.
B.
It returns an error because an insert operation is not allowed on views.
C.
It inserts a row in the view only.
D.
It returns an error because the PRIMARY ACCOUNT column is not selected for the view definition.

Quiz

6/10
Examine this statement which has executed successfully:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 5-2528356876
Select the answer
1 correct answer
A.
Execution performance can be improved by using like instead of RLIKE.
B.
The statement takes advantage of index description_idx.
C.
Execution performance can be improved by, using a composite index with column description as
the leftmost prefix column description.
D.
No index will improve statement performance.
E.
Execution performance can be improved by adding an index on column description.

Quiz

7/10
Which two differences exist between the timestamp and date time data types?
Select the answer
2 correct answers
A.
timestamp has larger range of values.
B.
timestamp uses less storage space.
C.
timestamp stores more decimal points in seconds
D.
timestamp converts the value based on the session time zone.
E.
timestamp stores the interval between two dates.

Quiz

8/10
Which two are true about MySQL Document Store?
Select the answer
2 correct answers
A.
It helps to store data items in a schema-less key-value store.
B.
It can store documents greater than 4 GB.
C.
It depends heavily on strictly typed data.
D.
It allows one to bypass the SQL layer of the server.
E.
There is no access to relational tables.

Quiz

9/10
Examine this statement and output:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 6-2940830670



Now, examine these desired output values:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 7-3870266753



Which statement updates the table data as require
Select the answer
1 correct answer
A.
UPDATE exam_result SET score=TRUNCATE
B.
UPDATE examresult SET score=ROUND(CEIL(score
C.
UPDATE exam_result SET score=CEIL(TRUNCATE(sco
D.
UPDATE exam_result SET score=CEIL(ROUND(score,1));
E.
UPDATE exam_result SET score=ROUND(score,1);
F.
UPDATE exam_result SET score=TRUNCATE(score,1);

Quiz

10/10
Examine this statement:


Certification Exam MySQL 8.0 Database Developer Oracle Oracle-1Z0-909 8-3088326719
Select the answer
1 correct answer
A.
Inserting COMMIT; SET @m :=: before line 4
B.
user who creates the procedure needing the create and execute privileges
C.
user who creates the procedure needing the create routine privilege
D.
inserting USE <database >; before line 3
E.
Inserting DEFINER 'username '@' localhost' clause into the CREATE PROCEDURE statement
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  • Quiz name:MySQL 8.0 Database Developer
  • Total number of questions:65
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