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MYSQL 1Z0-874 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Interpreting Error Messages and Logs | 5% | - General, binary, and error logs - Error codes and messages |
| Optimizing the Operating System Environment | 5% | - OS resource limits and tuning - File system and disk I/O |
| Scaling MySQL | 10% | - High availability concepts - Replication setup and management - Read/write splitting |
| Upgrade-Related Security Issues | 5% | - Security changes between versions - Post-upgrade security checks |
| User Management and Access Control | 20% | - Creating and managing user accounts - Grant tables structure and maintenance - Granting and revoking privileges |
| Stored Routines | 5% | - Triggers and events - Security and execution context - Stored procedures and functions |
| Optimizing Queries | 15% | - Index design and usage - Query rewriting and optimization - Slow query log analysis - Using EXPLAIN to analyze execution plans |
| Optimizing Schemas and Data Types | 15% | - Normalization and denormalization - Table design and partitioning - Choosing appropriate data types |
| Securing the MySQL Server | 10% | - Network security and encryption - Restricting file and system access - Security configuration options |
| Optimizing the Server Configuration | 10% | - Storage engine tuning - Memory and buffer settings - Thread and connection management |
MYSQL MySQL 5.0 Database Administrator Certified Professional Exam, Part II Sample Questions:
Which of the following statements are required to create a key cache of 4 MB, assign the
MyISAM table world.City to it and preload the index?
- A. Mysql> ALTER TABLE world.city KEY_CACHE = 4194304;
- B. Mysql> SET GLOBAL city_cache.key_buffer_size = 4194304; mysql> CACHE INDEX world.City IN city_cache; mysql> LOAD INDEX INTO CACHE world.City;
- C. Mysql> CREATE CACHE FOR world.City SIZE = 4194304;
- D. It is not possible to create a key cache for a specific MyISAM table, only the global key cache can be used.
Correct Answer: B 🗳️
The stored function year_to_date is created by the 'root'@'localhost' account as follows:
CREATE FUNCTION year_to_date ()
RETURNS DECIMAL(10,2)
SQL SECURITY DEFINER
BEGIN ... END;
Within the routine body, a number of calculations are made on data in the financials table and the calculated value is returned. The only account which can access the financials table is 'root'@'localhost'.
If a client connects with the account
'joe'@'localhost' and calls the year_to_date function, what will happen?
- A. If the account 'joe'@'localhost' has the EXECUTE privilege on year_to_date, the function will complete successfully
- B. The function will not execute, as 'joe'@'localhost' does not have access to the financials table
- C. The function will not execute as SQL SECURITY DEFINER has been specified. It would execute if instead SQL SECURITY INVOKER had been specified
- D. The function will always execute as if it was 'root'@'localhost' that invoked it since SQL SECURITY DEFINER has been specified.
Correct Answer: A 🗳️
Which of the following best describe the purpose of the long_query_time variable?
- A. It is used to tell the server the total CPU seconds that are allotted to a client connection before it shut down.
- B. It is used to tell the server after how many seconds to abort a query.
- C. It is used to see the time it took the last longest query to run.
- D. It is used to tell the server when to log a query as slow.
Correct Answer: D 🗳️
Which of the following best describes the effect that the per-process limit of open file descriptors in an operating system has on MySQL, and what can be done to increase it? (Choose two)
- A. The --open-files-limit option can be used to increase it.
- B. It limits the maximum size of the table cache that holds file descriptors.
- C. It limits the amount of operations MySQL can perform at one time.
- D. The operating system may be able to be reconfigured to increase this limit.
Correct Answer: B,D 🗳️
Which of the following are important network factors for remote MySQL clients? (Choose two)
- A. Latency.
- B. Firewalls.
- C. The type of routers used.
- D. Throughput speed.
Correct Answer: A,D 🗳️
