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Oracle 1Z0-909 Exam Syllabus Topics:

Topic	Details
Topic 1	Schedule database operations Store and process temporal data
Topic 2	Analyze queries for optimization Aggregate and summarize data Data-driven Applications
Topic 3	Use MySQL Shell to access document stores Retrieve data from the database by using a connector
Topic 4	Create and access a document store JSON and Document Store Store and process numeric data
Topic 5	Explain application development with NoSQL and XDevAPI Handle and interpret errors and warnings
Topic 6	Store and process spatial data Design, create, and alter views
Topic 7	Rewrite queries for optimization Store and process string data
Topic 8	Resolve consistency problems with isolation levels Set SQL Modes to change MySQL behavior
Topic 9	Understand locking mechanisms within MySQL Control transactions in applications
Topic 10	Create and execute stored routines MySQL Schema Objects and Data

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Oracle MySQL 8.0 Database Developer Sample Questions (Q59-Q64):

NEW QUESTION # 59
Examine these statement which execute successfully:

Now, examine the statements executed in the mysqi command-line client:

What is true?
A)

B)

C)

D)

• A. Option C
• B. Option B
• C. Option A
• D. Option D

Answer: A
NEW QUESTION # 60
Examine these commands which execute successfully:
mYsql> CREATE TABLE income (acct_num INT, amount DECIMAL(10,2));
mysql> CREATE TRIGGER subtotal BEFORE INSERT ON income
FOR EACH ROW SET @subtotal = subtotal + NEW.amount;
Which is true for the income table?

• A. The trigger activates after any row in the table has been updated.
• B. The trigger activates after any row has been inserted into the table.
• C. The trigger body set causes trigger activation.
• D. Execution of an insert statement causes the trigger to activate.

Answer: D
NEW QUESTION # 61
Examine these commands which execute successfully in the sequence shown in Sessions S1 and S2:

Now, examine this statement that execute successfully in s1:
S1> SELECT * FROM emp;
Which is true about the result of the select statement?

• A. The inserted row is not returned because the transaction still active in s2.
• B. The inserted row is not returned because the isolation level is READ COMMITTED in S2.
• C. The inserted row is returned because the isolation level is RPEATABLE READ in S1.
• D. The inserted row is returned because the transaction is auto committed in S2.

Answer: D
NEW QUESTION # 62
Examine the appointments table definition which contains one million rows:

Now, examine this statement which executes successfully:

Which statement will improve query performance?

• A. ALTER TABLE appointments add index IX4<attendantid, payment, credit)
• B. ALTER TABLE appointments add index IX2(attendantsessionid, createdby)
• C. ALTER TABLE appointments add index IX_1(credit,payment)
• D. ALTER TABLE appointments add index IX3(attendantid, created_by)

Answer: A
NEW QUESTION # 63
Examine this statement and output:

What causes the error?

• A. The set local_infile option has not been enabled.
• B. The database client process does not have sufficient privilege.
• C. The database server process does not have sufficient privilege.
• D. The database user does not have sufficient privilege.
• E. The database server is running in read-only mode.
• F. The engine is disabled.

Answer: C
NEW QUESTION # 64
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