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Oracle 1Z0-909 Exam Syllabus Topics:

Topic Details
Topic 1
  • Schedule database operations
  • Store and process temporal data

Topic 2
  • Use MySQL Shell to access document stores
  • Retrieve data from the database by using a connector

Topic 3
  • Explain application development with NoSQL and XDevAPI
  • Handle and interpret errors and warnings

Topic 4
  • Explain the programming constructs used in stored routines
  • Choose between connectors for a given application

Topic 5
  • Understand locking mechanisms within MySQL
  • Control transactions in applications

Topic 6
  • Analyze queries for optimization
  • Aggregate and summarize data
  • Data-driven Applications

Topic 7
  • Demonstrate connector use, management and configuration
  • Secure credentials and connections

Topic 8
  • Resolve consistency problems with isolation levels
  • Set SQL Modes to change MySQL behavior

Topic 9
  • Create and execute stored routines
  • MySQL Schema Objects and Data


Oracle MySQL 8.0 Database Developer Sample Questions (Q47-Q52):

NEW QUESTION # 47
Examine this statement and output:

You execute this statement:
SELECT JSON_SEARCH(product,'one','IT') FROM fshop ;
What is the output?

  • A. ''$.varieties[4]. origin[1]''
  • B. ''$.varieties [3]. origin[0]''
  • C. product->varieties[3]. origin[0]''
  • D. product->''$.varieties [4]. origin[1];;

Answer: D
NEW QUESTION # 48
Which two statements are true about aggregate functions?

  • A. AVG () does not allow use of the distinct option.
  • B. SUM () returns o if there are no rows to aggregate.
  • C. MAX () returns null if there are no rows to aggregate.
  • D. COUNT (distinct) returns a count of the number of rows with different values including Null.
  • E. MIN () cannot use distinct when it executes as a Windows function.

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

Answer: B
NEW QUESTION # 50
Examine this statement and output:

Which is true?

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

Answer: C
NEW QUESTION # 51
Examine this statement that execute successfully in an interactive session:

The user running this session now goes to lunch for an hour.
Now, examine these statements executed independently in separate sessions while Session 0 is still active:

How many of them will complete while Session 0 is still active?

  • A. 0
  • B. 1
  • C. 2
  • D. 3
  • E. 4
  • F. 5

Answer: D
NEW QUESTION # 52
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