Oracle 1Z0-909 valid exam dumps : MySQL 8.0 Database Developer

  • Exam Code: 1Z0-909
  • Exam Name: MySQL 8.0 Database Developer
  • Updated: Nov 05, 2026
  • Q&As: 66 Questions and Answers

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Oracle 1Z0-909 Value Pack (Frequently Bought Together)

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Value Pack Total: $179.97  $79.99

About Oracle 1Z0-909 Valid Exam Braindumps

Every candidate studies differently, so ValidDumps ships the 1Z0-909 practice questions in three formats: a printable PDF, a Desktop Test Engine for Windows, and an Online Test Engine that runs in any browser. However you prefer to prepare for Oracle MySQL 8.0 Database Developer, there is a version that fits.

Oracle 1Z0-909 Exam Syllabus Topics:

SectionWeightObjectives
Topic 1: Transactions and Concurrency15%- Understand isolation levels and locking mechanisms
- Resolve consistency and concurrency issues
- Control transactions in SQL and applications
Topic 2: Connectors and APIs15%- Choose appropriate connectors for applications
- Configure and manage connectors
- Retrieve data using connectors
- Handle special values and secure connections
Topic 3: JSON and Document Store15%- Create and store JSON documents
- Query and process JSON data
- Use XDevAPI and MySQL Shell for document store
Topic 4: MySQL Stored Programs15%- Implement triggers and events
- Create stored procedures and functions
- Use programming constructs in routines
Topic 5: Query Optimization15%- Design and use indexes effectively
- Analyze queries using EXPLAIN
- Rewrite queries for better performance
Topic 6: MySQL Schema Objects and Data Types20%- Define constraints and indexes
- Work with numeric, string, temporal and spatial data types
- Design, create and alter tables and views
Topic 7: Data-driven Applications15%- Use prepared statements
- Set and use SQL Modes
- Aggregate and summarize data
- Handle errors, warnings and result sets

Common Questions About the Oracle 1Z0-909 Exam

The 1Z0-909 exam is the official exam behind the Oracle Certified Professional, MySQL 8.0 Database Developer credential from Oracle. It sits at the Professional level of the Oracle certification track. The ValidDumps practice questions on this page map to the same objectives, so you can measure your readiness before you book a seat.

The 1Z0-909 exam contains 65 questions and gives you 90 minutes to complete them. That pace leaves little room for getting stuck, so train yourself to flag a hard question, move on, and circle back later. Run at least one full timed session in the ValidDumps test engine a week before your exam date to check whether your pacing holds under pressure.

You need 62% to pass the 1Z0-909 exam, and the official registration fee is USD $245 (varies by region). A retake means paying that fee again in full, which makes thorough preparation the cheaper option by far. Before scheduling, take a timed ValidDumps practice test; if you are not scoring comfortably above the passing line, give yourself more study time instead of booking on hope.

No mandatory prerequisites; recommended 6-12 months hands-on experience with MySQL 8.0

Requirements can change, so confirm the latest details on the official Oracle exam page before you register.

You can book the 1Z0-909 exam through the following official channels:

The exam is delivered Online proctored or onsite testing at Pearson VUE centers, so pick the option that suits you when booking.

Oracle points candidates to these official courses:

Once you have worked through the official material, wrap up your preparation with the 66 practice questions from ValidDumps to lock in what you have learned.

Yes. A free 1Z0-909 PDF demo is available, so you can check the question style and answer quality before you commit. Every purchase also includes 365 days of free updates, and if your product expires after that, you can extend the update service at a 50% discount from your member zone.

Your purchase is protected by our 100% Money Back Guarantee. If you take the 1Z0-909 exam within 60 days of purchase and do not pass, send us a scanned enrollment slip and your official Score Report PDF within two days of the exam; approved refunds are processed within seven days. The candidate name must match the payer name, and the guarantee does not apply to exams taken within three days of purchase, to products that were downloaded but never used in an exam sitting, or to free materials and expired orders. If you would rather keep studying, we can instead exchange your order for two free exam products of equal value while your original product keeps its update service. Delivery itself is instant: your download is emailed within one minute of payment and stays available in your member zone, with no limit on how many computers you can install it on. If nothing arrives within two hours, contact our customer service team.

The 1Z0-909 syllabus is divided into 7 domains, including Connectors and APIs (15%), JSON and Document Store (15%), and Query Optimization (15%). The complete breakdown, with every domain and its subtopics, is listed in the Exam Topics section above — review it line by line and flag the areas where you feel weakest.

Oracle MySQL 8.0 Database Developer Sample Questions:

Question #1

Examine these commands and output:

Which is true?

  • A. It returns an error because the DROP TABLE statement did not drop the view.
  • 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. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #2

Examine these commands and output:


Which is true about the execution of the insert statement?

  • A. It inserts a new row in the base table only.
  • B. It inserts a row in the view and base table.
  • C. It inserts a new row in the view only.
  • D. It returns an error.
Reveal Solution  Discussion  0

Correct Answer: C  🗳️

Question #3

Examine this table definition:

The table must always remain a valid document store collection. What restriction does this impose on any added column?

  • A. The column must be used in a unique constraint.
  • B. The column must be a generated column referencing any attribute of doc.
  • C. The column must be indexed.
  • D. The column must be a generated column referencing only an existing attribute of doc.
  • E. The column must have a default value.
Reveal Solution  Discussion  0

Correct Answer: B  🗳️

Question #4

Examine these statement which execute successfully:

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

What is true?

  • A.
  • B.
  • C.
  • D.
Reveal Solution  Discussion  0

Correct Answer: A  🗳️

Question #5

Examine this statement and output:

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

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

Correct Answer: B  🗳️

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