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Oracle 1z1-909 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Analyze queries for optimization
  • Aggregate and summarize data
  • Data-driven Applications
Topic 2
  • Understand locking mechanisms within MySQL
  • Control transactions in applications
Topic 3
  • Store and process spatial data
  • Design, create, and alter views
Topic 4
  • Create and execute stored routines
  • MySQL Schema Objects and Data
Topic 5
  • Resolve consistency problems with isolation levels
  • Set SQL Modes to change MySQL behavior
Topic 6
  • Create and access a document store
  • JSON and Document Store
  • Store and process numeric data
Topic 7
  • Explain the programming constructs used in stored routines
  • Choose between connectors for a given application
Topic 8
  • Use MySQL Shell to access document stores
  • Retrieve data from the database by using a connector
Topic 9
  • Demonstrate connector use, management and configuration
  • Secure credentials and connections
Topic 10
  • Schedule database operations
  • Store and process temporal data

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Oracle MySQL 8.0 Database Developer Sample Questions (Q45-Q50):

NEW QUESTION # 45
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. Replace line 2 With: Slink = mysql_xdevapi\getSession
    ("mysqlx://username:[email protected]:3306","schema");
  • B. Install the PHP executable in the path used by the MySQL installation.
  • C. Enable the mysqli extension in the php.ini file.
  • D. Replace line 2 with Slink = mysql.connect {"localhost: 3306n, "username", "pas "schema") ;

Answer: A


NEW QUESTION # 46
Examine this statement which has executed successfully:

  • A. No index will improve statement performance.
  • B. The statement takes advantage of index description_idx.
  • C. Execution performance can be improved by using like instead of RLIKE.
  • D. Execution performance can be improved by adding an index on column description.
  • E. Execution performance can be improved by, using a composite index with column description as the leftmost prefix column description.

Answer: C


NEW QUESTION # 47
How does InnoDB choose deadlock victims in MySQL?

  • A. It chooses the transaction with the most modified rows.
  • B. It chooses the transaction with the most accumulated CPU time.
  • C. It chooses the transaction with the least accumulated CPU time.
  • D. It chooses the transaction randomly.
  • E. It chooses the transaction with the fewest modified rows.
  • F. It chooses the transaction with the lowest transaction ID.

Answer: D


NEW QUESTION # 48
Examine this statement and output:

Which is true?

  • A. myview was defined with the temptable processing algorithm.
  • B. Column Name in myview can be indexed if the is_updatable attribute is true.
  • C. myview cannot be automatically indexed.
  • D. The underlying table's index on the Name column is not chosen because of low selectivity.

Answer: A


NEW QUESTION # 49
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 B
  • B. Option C
  • C. Option D
  • D. Option A

Answer: B


NEW QUESTION # 50
......

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