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Exam Information
Official specifications published by Oracle
Exam Format
90 min
65
62%
Professional
Registration
Pearson VUE or online proctoring
English
Validity
Lifetime (does not expire)
Not required - Oracle Certified Professional certifications do not expire
1Z0-909 Exam Topics and Domains
1Z0-909 is organized into 7 weighted domains. Expect to work with MySQL SQL, MySQL Connectors, MySQL Data Types, MySQL Transactions, and more.
1
Connectors and APIs
Choose between connectors for a given application
Connector Selection
- Evaluate application requirements to select appropriate MySQL connector
- Understand capabilities of different MySQL connectors
Demonstrate connector use, management and configuration
Connector Configuration
- Configure MySQL connectors for optimal performance
- Manage connector resources effectively
Retrieve data from the database by using a connector
Data Retrieval
- Implement efficient data retrieval using MySQL connectors
- Handle various data types returned from queries
Handle special values
Special Value Handling
- Properly handle NULL and special data values
- Work with binary and JSON data through connectors
Secure credentials and connections
Connection Security
- Implement secure database connections
- Manage credentials securely in applications
2
Data-driven Applications
Use prepared statements
Prepared Statements
- Implement prepared statements for security and performance
- Understand the lifecycle of prepared statements
Set SQL Modes to change MySQL behavior
SQL Modes
- Configure SQL modes for different application requirements
- Understand the impact of SQL modes on query behavior
Handle and interpret errors and warnings
Error Handling
- Implement robust error handling in database applications
- Interpret MySQL error codes and messages
Display query results
Result Display
- Format and present query results effectively
- Implement result pagination
Aggregate and summarize data
Data Aggregation
- Perform data aggregation and summarization
- Use advanced grouping techniques
Advanced Report Generation
Report Generation
- Create complex reports using advanced SQL techniques
- Optimize query performance for reporting
3
MySQL Schema Objects and Data
Design, create, and alter views
Views
- Design and implement database views
- Understand view updatability rules
Store and process string data
String Data Types
- Select appropriate string data types
- Manipulate string data using MySQL functions
- Configure character sets and collations
Store and process numeric data
Numeric Data Types
- Choose appropriate numeric data types
- Understand precision and range limitations
- Perform numeric calculations
Store and process temporal data
Temporal Data Types
- Select appropriate temporal data types
- Handle timezone-aware temporal data
- Perform date and time calculations
Store and process spatial data
Spatial Data Types
- Implement spatial data storage
- Perform spatial queries and analysis
- Optimize spatial data access
4
Transactions
Control transactions in SQL
SQL Transaction Control
- Implement transaction control in SQL
- Use savepoints for partial rollbacks
Control transactions in applications
Application-level Transactions
- Implement transaction management in applications
- Handle transaction errors appropriately
Resolve consistency problems with isolation levels
Transaction Isolation Levels
- Configure transaction isolation levels
- Understand and resolve consistency problems
- Balance consistency vs performance
Understand locking mechanisms within MySQL
MySQL Locking
- Understand MySQL locking mechanisms
- Prevent and resolve deadlocks
- Use explicit locking appropriately
5
Query Optimization
Use indexes for optimization
Index Usage
- Design and implement effective indexes
- Understand index selection by query optimizer
Analyze queries for optimization
Query Analysis
- Analyze query execution plans
- Identify performance bottlenecks
- Use MySQL performance tools
Rewrite queries for optimization
Query Rewriting
- Rewrite queries for better performance
- Apply query optimization techniques
- Understand query optimizer behavior
6
MySQL Stored Programs
Create and execute stored routines
Stored Procedures and Functions
- Create and execute stored procedures and functions
- Understand differences between procedures and functions
Explain the programming constructs used in stored routines
Stored Routine Constructs
- Implement control flow in stored routines
- Handle errors and conditions
- Use cursors when appropriate
Create and execute triggers
Triggers
- Create triggers for data validation and automation
- Understand trigger execution context
Schedule database operations
Event Scheduler
- Create and manage scheduled database events
- Configure event scheduler
7
JSON and Document Store
Create and store JSON documents
JSON Data Type
- Store JSON documents in MySQL
- Create JSON structures using MySQL functions
Process data in JSON documents
JSON Manipulation
- Query and manipulate JSON data
- Optimize JSON data access with indexes
Explain application development with NoSQL and XDevAPI
XDevAPI
- Understand NoSQL document model in MySQL
- Explain XDevAPI capabilities
Create and access a document store
Document Store Creation
- Create and manage document store collections
- Perform CRUD operations on documents
Use MySQL Shell to access document stores
MySQL Shell
- Use MySQL Shell for document store access
- Perform operations in different shell modes
How do I earn this certification?
Passing 1Z0-909 earns the MySQL 8.0 Database Developer Oracle Certified Professional certification. It sits in the MySQL Developer track.
Next Level Options
MySQL 8.0 Database Developer is a professional-level certification Consider expanding to MySQL Database Administration or other Oracle certifications
Alternative Paths
- 1Z0-908 - MySQL 8.0 Database AdministratorComplementary MySQL administration skills for developers
- Oracle Database SQLExpand to Oracle Database development
- Oracle Cloud Infrastructure certifications Cloud deployment and management skills
Practice with Precision
The PlanetCert Simulator mirrors the real exam environment with authentic questions and timed pressure.
How to study for this exam?
The most effective way to prepare for 1Z0-909 is by using the PlanetCert Simulator to practice questions and review detailed explanations.
What's changed on this exam?
Current Status
ACTIVE
Updates
- MySQL 8.0 JSON Features 8.0.x JSON operations are a major exam topic - stay current with new JSON functions • Release date: Ongoing updates
- MySQL Document Store 8.0.x Entire domain dedicated to document store and XDevAPI • Release date: Available in MySQL 8.0
- MySQL Performance Schema 8.0.x Important for query optimization topics • Release date: Enhanced in 8.0
- MySQL InnoDB Enhancements 8.0.x Critical for understanding transactions and locking • Release date: 8.0 series
Who should take this exam?
This exam is typically taken by MySQL Database Developers and Application Developers using MySQL.
- Familiarity with MySQL database fundamentals
- Experience with SQL programming
- Understanding of database application development
- Knowledge of at least one programming language (Java, Python, C++, etc.)
- Hands-on experience with MySQL 8.0