Updated Sep-2022 100% Cover Real 1Z0-909 Exam Questions - 100% Pass Guarantee
Use Real Oracle Dumps - 100% Free 1Z0-909 Exam Dumps
NEW QUESTION 11
Examine this event's metadata:
Now examine this command:
DROP USER 'userl'e'localhost';
Which effect will the command have on the event?
- A. The event is not scheduled and will no longer execute. The system will log an error.
- B. The event is scheduled but will no longer execute. The system will log an error.
- C. The event is scheduled and executed but fails. The system will log an error.
- D. The event will be dropped without an error or warning.
Answer: B
NEW QUESTION 12
Which select statement returns true?
- A. SELECT NULL <=> NULL;
- B. SELECT NULL <> NULL;
- C. SELECT NULL = NULL;
- D. SELECT NULL := NULL;
Answer: A
NEW QUESTION 13
Examine the output:
Which explain command will obtain the output?
- A. EXPLAIN PORMAT^TRADITIONAL
- B. EXPLAIN ANALYZE
- C. EXPLAIN PORMAT=JSON
- D. EXPLAIN FORMAT=TREE
- E. EXPLAIN PARTITIONS
Answer: C
NEW QUESTION 14
Which two are true about indexes?
- A. Indexes are used to enforce unique constraints.
- B. Secondary index access will always be faster than a table scan.
- C. Indexes reduce disk space used.
- D. Indexing all of a table's columns improves performance.
- E. Indexes contain rows sorted by key values.
Answer: C,D
NEW QUESTION 15
Examine these statements which execute successfully:
Which two changes will improve this query performance?
- A. CREATE INDEX 1X7 ON users (user_name) USING HASH;
- B. CREATE INDEX IX1 ON locations (loc_shareci) ;
- C. CREATE INDEX 1X4 ON Locations (site_id, loc_shared);
- D. CREATE INDEX 1X6 ON users (user_name);
- E. CREATE INDEX 1X2 ON locations (loc_mapping) USING HASH; fH
- F. CREATE INDEX 1X5 ON users (loc_id);
- G. CREATE INDEX 1X3 ON locations <loc_site_id) ;
Answer: A,D
NEW QUESTION 16
Which two statements are true about AUTO_INCREMENT?
- A. An AUTO_INCREMENT column must be indexed.
- B. A server restart always resets the AUTO_INCREMENT value to largest value in the AUTO_INCREMENT column plus 1.
- C. The decimal data type supports AUTO_INCREMENT.
- D. A table can have multiple AUTO_INCREMENT columns.
- E. AUTO_INCREMENT values allocated to a transaction that is rolled back are not reused.
Answer: B,C
NEW QUESTION 17
Examine this statement which has executed successfully:
- A. Execution performance can be improved by using like instead of RLIKE.
- B. Execution performance can be improved by adding an index on column description.
- C. Execution performance can be improved by, using a composite index with column description as the leftmost prefix column description.
- D. The statement takes advantage of index description_idx.
- E. No index will improve statement performance.
Answer: A
NEW QUESTION 18
Which two are true about MySQL Document Store?
- 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 allows one to bypass the SQL layer of the server.
- D. It depends heavily on strictly typed data.
- E. There is no access to relational tables.
Answer: A,C
NEW QUESTION 19
The variables c and d are declared as integer types.
Examine these initialization statements with placeholder value <p1>, which execute successfully:
Now, examine this loop which executes successfully:
Which loop results in the same value of d for all valid values of <p1>?
A)
B)
C)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: D
NEW QUESTION 20
Examine these commands and output:
Which is true about the execution of the insert statement?
- A. It inserts a new row in the view only.
- B. It returns an error.
- C. It inserts a row in the view and base table.
- D. It inserts a new row in the base table only.
Answer: A
NEW QUESTION 21
Examine this statement:
DECLARE not_found CONDITION FOR SQLSTATE '02000';
In which two statements can not found be used?
- A. in a leave statement to exit a loop
- B. in an if statement
- C. in a while loop
- D. in a signal statement
- E. in a handler declaration
Answer: C,D
NEW QUESTION 22
Examine this SQL statement:
- A. db.country. fields ( [ 'Name ' , 'Population* ] ) .where ( 'Name LIKE "United%',,) -select ()-limit(5)
- B. db. country-select(['Name','Population']) .where('Name LIKE :param') -bind ('param' , 'United*') -limit(5)
- C. db . country, select ( [ ' Name LIKE "united%" ' , ' Population>^0 ' ] ) - limit (5)
- D. db . country. Select ([Name' , 'Population.'] ) -limit (5) .where('Name LIKE "United%"')
- E. db . country. fields ( [ ' Name ' , 'Population']) . select (' limit=5 ' ) .where('Name LIKE "United%" ' )
Answer: B
NEW QUESTION 23
Examine these MySQL Shell statements:
What is the true about the attempts to add document to the collection?
- A. All documents are added and cause a warning.
- B. All documents are added without any error or warning.
- C. First two documents are added, then mismatched field names cause an error.
- D. First three documents are added, then different number of fields cause an error.
- E. First two documents are added, then mismatched field names cause a warning.
Answer: A
NEW QUESTION 24
You must write a statement that combines the first_name and last_name columns from the employees table as "last_name, first_name." Which two statements will do this?
- A. SELECT CONCAT_WS(', ',last_name,first_name) FROM employees;
- B. SELECT last_name, ' , ',first_name FROM employees;
- C. SELECT last_name + ', ' + first_name FROM employees;
- D. SELECT CONCAT(last name,', ',first_name) FROM employees;
- E. SELECT GROUP_CONCAT(last_name, first_name) FROM employees;
Answer: C,E
NEW QUESTION 25
Examine these statement which execute successfully:
Now, examine the statements executed in the mysqi command-line client:
What is true?
- A.
- B.
- C.
- D.
Answer: B
NEW QUESTION 26
The collection col contains all episodes for all seasons for a TV show.
Examine this document which has an example of the details for each episode:
Which query returns all expisode names from the first season?
- A. SELECT name FROM col WHERE season = 1;
- B. SELECT "S.name" FROM col WHERE "S.season" = "1";
- C. SELECT doc->,$.name,, FROM col WHERE doc->"$ . season" = "1";
- D. SELECT doc->"$.name" FROM col WHERE doc->"$.season" = "1";
Answer: B
NEW QUESTION 27
Examine these commands and output:
Which is true?
- A. It returns an error because the DROP TABLE statement did not drop the view.
- B. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
- C. A new view is created because the previous was dropped on execution of the drop table statement.
- D. It returns an error because the CREATE TABLE statement automatically recreated the view.
Answer: B
NEW QUESTION 28
Examine the Test.php script which is numbered for clarity, and its output:
PHP Fatal error: Uncaught Error: call to underined function mysqli_connect () in Test.php:2 Which action will fix this error?
- A. Enable the mysqli extension in the php.ini file.
- B. Replace line 2 With: Slink = mysql_xdevapi\getSession
("mysqlx://username:password@localhost:3306","schema"); - C. Replace line 2 with Slink = mysql.connect {"localhost: 3306n, "username", "pas "schema") ;
- D. Install the PHP executable in the path used by the MySQL installation.
Answer: B
NEW QUESTION 29
Examine the contents of these tables:
Now examine the expected results for a user with privileges to access the table:
Which query returns the expected results?
A)
B)
C)
D)
- A. Option B
- B. Option D
- C. Option C
- D. Option A
Answer: D
NEW QUESTION 30
Examine this statement and output:
Now, examine these desired output values:
Which statement updates the table data as require
- A. UPDATE exam_result SET score=ROUND(score,1);
- B. UPDATE exam_result SET score=TRUNCATE
- C. UPDATE exam_result SET score=CEIL(ROUND(score,1));
- D. UPDATE examresult SET score=ROUND(CEIL(score
- E. UPDATE exam_result SET score=CEIL(TRUNCATE(sco
- F. UPDATE exam_result SET score=TRUNCATE(score,1);
Answer: A
NEW QUESTION 31
Examine these lines of Python code:
You must add a line of code to complete the code to return data to the variable d. Which line will do this?
- A. d = cursor.fetchall(query, (hire_start, hire_end))
- B. d = cursor.fetch(query, (hire_start, hire_end))
- C. d = cursor . f etchall (query)
- D. d = cursor.execute(query)
- E. d = cursor.fetch(query % (hire_start, hire_end))
- F. d = cursor.execute(query, (hire_start, hire_end) )
Answer: B
NEW QUESTION 32
Examine this statement which executes successfully:
The table is populated with a range of values including jobs for Robert, John, and Katie. Now, examine this statement and output:
Why is an empty result set returned?
- A. The select requires json_unquoteo in the where clause.
- B. The virtual values in the name column must be accessed using functions.
- C. The JSON datatype cannot be used in virtual columns.
- D. The json_extract() function requires a length value that matches the field length in the schema.
- E. Table statistics must be updated to generate values for the name column.
Answer: C
NEW QUESTION 33
......
Oracle 1Z0-909 Exam Syllabus Topics:
| Topic | Details |
|---|---|
| Topic 1 |
|
| Topic 2 |
|
| Topic 3 |
|
| Topic 4 |
|
| Topic 5 |
|
| Topic 6 |
|
1Z0-909 Dumps PDF - 1Z0-909 Real Exam Questions Answers: https://exam-labs.exam4tests.com/1Z0-909-pdf-braindumps.html