Exam Name: MySQL 8.0 Database Developer
Certification Provider: Oracle
Corresponding Certification: MySQL Developer
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- Total Questions: 66
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Oracle 1Z0-909 Exam Overview:
| Certification Vendor: | Oracle |
|---|---|
| Exam Name: | MySQL 8.0 Database Developer |
| Exam Number: | 1Z0-909 |
| Passing Score: | 62% |
| Exam Duration: | 90 minutes |
| Certificate Validity Period: | Valid for life (no expiration) |
| Available Languages: | English, Japanese |
| Exam Format: | Multiple Select, Multiple Choice |
| Real Exam Qty: | 65 |
| Exam Price: | USD $245 (varies by region) |
| Recommended Training: | Become a MySQL 8.0 Database Developer Oracle MySQL Learning Subscription |
| Exam Registration: | Pearson VUE Registration Oracle University Exam Page |
| 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 |
|---|---|---|
| Connectors and APIs | 15% | - Retrieve data using connectors - Choose appropriate connectors for applications - Configure and manage connectors - Handle special values and secure connections |
| Query Optimization | 15% | - Design and use indexes effectively - Analyze queries using EXPLAIN - Rewrite queries for better performance |
| MySQL Stored Programs | 15% | - Implement triggers and events - Use programming constructs in routines - Create stored procedures and functions |
| JSON and Document Store | 15% | - Use XDevAPI and MySQL Shell for document store - Create and store JSON documents - Query and process JSON data |
| MySQL Schema Objects and Data Types | 20% | - Work with numeric, string, temporal and spatial data types - Design, create and alter tables and views - Define constraints and indexes |
| Transactions and Concurrency | 15% | - Resolve consistency and concurrency issues - Understand isolation levels and locking mechanisms - Control transactions in SQL and applications |
| Data-driven Applications | 15% | - Aggregate and summarize data - Handle errors, warnings and result sets - Use prepared statements - Set and use SQL Modes |
1Z0-909 Exam FAQ — Everything Before You Buy
The Oracle MySQL 8.0 Database Developer is one of Oracle's influential certification exams — pass it and you earn the Oracle Certified Professional, MySQL 8.0 Database Developer certification (Professional level). Among IT workers it's a popular way to prove professional knowledge in the field.
Yes — download the free 1Z0-909 demo and judge the question quality with your own eyes before paying. Every purchase then includes 365 days of free updates, and an expired update period can be extended at 50% off.
No mandatory prerequisites; recommended 6-12 months hands-on experience with MySQL 8.0 Because these requirements change over time, double-check the current criteria on the official exam page (official 1Z0-909 exam information) before you book.
The vendor recommends:
Training is a solid foundation — but practice is the proof. Follow up any course with the 1Z0-909 practice questions from Lead1Pass to see whether you're truly exam-ready.
Register through the vendor's official channels:
The exam is offered Online proctored or onsite testing at Pearson VUE centers — pick what suits you when you book.
65 questions inside 90 minutes. The hidden skill here is pacing: know your per-question budget, skip and return rather than stall, and rehearse with the Lead1Pass online test engine — you can set the timer yourself to mimic real exam pressure, on any device, whenever spare time appears.
Delivery is instant — after successful payment, our system automatically emails the product to your mailbox within a minute, with download access right away and no installation limits; contact our 24/7 customer assistance if 2 hours pass with nothing. If you fail: take the corresponding 1Z0-909 exam within 60 days of purchase and submit a scanned enrollment slip plus the official Score Report PDF within 2 days of the exam — the full refund is processed within 7 days. Exclusions: exams taken within 3 days of purchase, name mismatches between candidate and payer, and free or expired products. Or exchange for two equal-value exam products free, keeping your updates.
The official Oracle MySQL 8.0 Database Developer blueprint contains 7 domains, including Query Optimization (15%), Connectors and APIs (15%), Data-driven Applications (15%). The weightings tell you where the exam's points live — allocate your spare time to match. The complete outline above has every domain and subtopic.
You'll need 62% to pass, and the official fee is USD $245 (varies by region) per attempt — every retake bills the full amount again. Practicing with the 66 questions from Lead1Pass until your scores are consistently comfortable is how you pay that fee once.
Oracle MySQL 8.0 Database Developer Sample Questions:
Examine these lines of Python code:
You must add a line of code to complete the code to return data to the variable d. Which line will do this?
- A. d = cursor.fetch(query, (hire_start, hire_end))
- B. d = cursor . f etchall (query)
- C. d = cursor.execute(query)
- D. d = cursor.fetch(query % (hire_start, hire_end))
- E. d = cursor.fetchall(query, (hire_start, hire_end))
- F. d = cursor.execute(query, (hire_start, hire_end) )
Correct Answer: A 🗳️
Your session has sqi_mode set to default.
Examine this statement which executes successfully:
Now examine this statement:
Which two changes are required to the insert statement so that it inserts the correct data?
* std_id = 10301
* firstname = Mary
* lastname = O'Hagen
* birthdate = November 26, 1997
* reg_date = the current date
- A. Change "O'Hagen" to "O\'Hagen".
- B. Change " NULL " to NULL.
- C. Change "O'Hagen" to 'o\'Hagen'.
- D. Change DATE () to DAY ().
- E. Change " NULL " to ' NULL ' .
- F. Change date () to CURRENT_TIMESTAMP () .
Correct Answer: B,D 🗳️
Which select statement returns true?
- A. SELECT NULL <> NULL;
- B. SELECT NULL = NULL;
- C. SELECT NULL := NULL;
- D. SELECT NULL <=> NULL;
Correct Answer: D 🗳️
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. Execution of an insert statement causes the trigger to activate.
- C. The trigger body set causes trigger activation.
- D. The trigger activates after any row has been inserted into the table.
Correct Answer: B 🗳️
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. MIN () cannot use distinct when it executes as a Windows function.
- D. MAX () returns null if there are no rows to aggregate.
- E. COUNT (distinct) returns a count of the number of rows with different values including Null.
Correct Answer: A 🗳️
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