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| Section | Objectives |
|---|---|
| Topic 1: SQL & Data Management | - Indexes and execution plans - Transactions and concurrency control - SQL syntax and optimization |
| Topic 2: Security & Maintenance | - User management and permissions - Routine maintenance operations - Audit and logging |
| Topic 3: Performance Tuning | - Query optimization - Resource monitoring - Index design |
| Topic 4: GaussDB Architecture & Fundamentals | - Distributed database concepts - Compute-storage separation principles - GaussDB (OLTP) core architecture |
| Topic 5: High Availability & Backup | - Backup and restore strategies - Replication mechanisms - Failover and recovery |
| Topic 6: Database Installation & Deployment | - Cluster deployment and initialization - Node roles and configuration |
1. In GaussDB (for MySQL), what is the default slow SQL threshold in seconds?
A) 5s
B) 10s
C) 20s
D) 15s
2. Which type of tree does the InnoDB engine use by default to store index information?
A) B-Tree
B) B+ Tree
C) Balanced Binary Tree
D) Binary Tree
3. In the failover process of GaussDB (for MySQL), when can the new host officially start providing write operations to clients?
A) After manage-vip is successfully bound
B) After standby is promoted to primary
C) After data-vip is successfully bound
D) After manage-vip is successfully unbound
4. When declaring a user variable, which of the following formats is correct?
A) ^variable_name
B) @variable_name
C) ~variable_name
D) %variable_name
5. Hints are used when the user knows the optimal execution plan or to stabilize SQL execution plans for performance tuning.
A) False
B) True
Solutions:
| Question # 1 Answer: B | Question # 2 Answer: B | Question # 3 Answer: C | Question # 4 Answer: B | Question # 5 Answer: B |
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