Exam Name: MySQL 8.0 Database Developer
Certification Provider: Oracle
Corresponding Certification: MySQL Developer
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Updated: Nov 06, 2026
No. of Questions: 66 Questions & Answers
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Oracle 1Z0-909 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | MySQL 8.0 Database Developer |
| Exam Number: | 1Z0-909 |
| Certificate Validity Period: | Valid for life (no expiration) |
| Available Languages: | English, Japanese |
| Exam Price: | USD $245 (varies by region) |
| Passing Score: | 62% |
| Exam Format: | Multiple Choice, Multiple Select |
| Exam Duration: | 90 minutes |
| Real Exam Qty: | 65 |
| Recommended Training: | Oracle MySQL Learning Subscription Become a MySQL 8.0 Database Developer |
| Exam Registration: | Oracle University Exam Page Pearson VUE Registration |
| Sample Questions: | DOWNLOAD DEMO |
| Exam Way: | Online proctored or onsite testing at Pearson VUE centers |
| Pre Condition: | No mandatory prerequisites; recommended 6-12 months hands-on experience with MySQL 8.0 |
| Official Syllabus URL: | https://education.oracle.com/mysql-80-database-developer/pexam_1Z0-909 |
Oracle 1Z0-909 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Query Optimization | 15% | - Design and use indexes effectively - Analyze queries using EXPLAIN - Rewrite queries for better performance |
| Topic 2: Data-driven Applications | 15% | - Handle errors, warnings and result sets - Use prepared statements - Aggregate and summarize data - Set and use SQL Modes |
| Topic 3: MySQL Stored Programs | 15% | - Create stored procedures and functions - Use programming constructs in routines - Implement triggers and events |
| Topic 4: JSON and Document Store | 15% | - Create and store JSON documents - Query and process JSON data - Use XDevAPI and MySQL Shell for document store |
| Topic 5: Transactions and Concurrency | 15% | - Resolve consistency and concurrency issues - Control transactions in SQL and applications - Understand isolation levels and locking mechanisms |
| Topic 6: MySQL Schema Objects and Data Types | 20% | - Design, create and alter tables and views - Work with numeric, string, temporal and spatial data types - Define constraints and indexes |
| Topic 7: Connectors and APIs | 15% | - Retrieve data using connectors - Choose appropriate connectors for applications - Handle special values and secure connections - Configure and manage connectors |
1Z0-909 Exam — Questions Candidates Actually Ask
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Through the vendor's official registration channels:
The exam runs Online proctored or onsite testing at Pearson VUE centers, so pick the setup that suits you when booking.
The Oracle MySQL 8.0 Database Developer is the official Oracle exam behind the Oracle Certified Professional, MySQL 8.0 Database Developer certification at the Professional level. It's how the vendor verifies that your skills meet its standard — and how employers know they do.
65 questions, 90 minutes on the clock. That ratio is the real exam-within-the-exam: budget your time per question, learn to flag and move on, and rehearse in the ActualTestsIT engine under real timing until finishing comfortably becomes your default.
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The Oracle MySQL 8.0 Database Developer blueprint divides into 7 domains, with JSON and Document Store (15%), Connectors and APIs (15%), Data-driven Applications (15%) among the headline areas. Let the weightings steer your hours — they tell you where the questions concentrate. The full outline above shows every subtopic.
Registration costs USD $245 (varies by region), and passing requires 62%. Credit card is the standard, secure way to pay — and note the fee applies per attempt, so a retake costs full price again. Practicing with the 66 questions from ActualTestsIT until your mock scores clear the bar comfortably is the cheaper insurance.
No mandatory prerequisites; recommended 6-12 months hands-on experience with MySQL 8.0 Vendor policies evolve, so before booking, confirm the latest eligibility details on the official exam page (official 1Z0-909 exam information).
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Oracle MySQL 8.0 Database Developer Sample Questions:
Examine these commands and output:
Which is true?
- A. A new view is created because the previous was dropped on execution of the drop table statement.
- B. It returns an error because the CREATE TABLE statement automatically recreated the view.
- C. Existing emp_vuL is dropped and a new emp_vu1 created with the new definition.
- D. It returns an error because the DROP TABLE statement did not drop the view.
Correct Answer: D 🗳️
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. First two documents are added, then mismatched field names cause an error.
- C. First three documents are added, then different number of fields cause an error.
- D. All documents are added without any error or warning.
- E. First two documents are added, then mismatched field names cause a warning.
Correct Answer: A 🗳️
Examine this statement:
DECLARE not_found CONDITION FOR SQLSTATE '02000';
In which two statements can not found be used?
- A. in an if statement
- B. in a handler declaration
- C. in a signal statement
- D. in a leave statement to exit a loop
- E. in a while loop
Correct Answer: C,E 🗳️
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 json_extract() function requires a length value that matches the field length in the schema.
- B. The select requires json_unquoteo in the where clause.
- C. The virtual values in the name column must be accessed using functions.
- D. The JSON datatype cannot be used in virtual columns.
- E. Table statistics must be updated to generate values for the name column.
Correct Answer: D 🗳️
Which two are true about MySQL connectors?
- A. Connector/ODBC is available on Unix, Windows, and MacOS X.
- B. Connectors must be installed on both the client and server hosts.
- C. Connector/Python is released in precompiled binary and source code.
- D. Connector/NET runs on the Windows platform only.
- E. Connector/J is based on Connector/C.
Correct Answer: B,E 🗳️
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