Knowledge quiz

It's time to put what you've learned to the test, get 5 right to pass this unit.

What is the primary goal of the current course discussed in the presentation?

Choose the correct answer.

To ensure that query performance improvements are sustained over time.

To introduce new database management systems.

To automate query optimization processes.

To develop new SQL query languages.

How does the execution plan of a parameterized SAP HANA query compare to the execution plans of multiple separate literal queries with different constant values in the WHERE clause?

Choose the correct answer.

Parameterized SAP HANA queries generate multiple execution plans, one for each parameter value, while literal queries reuse a single plan across all values.

A parameterized SAP HANA query generates a single execution plan reused for all parameter values. In contrast, multiple literal queries with different constant values develop potentially different execution plans.

Parameterized and literal queries generate a single execution plan regardless of parameter values or literal constants.

Multiple literal queries generate a single, optimized plan, while parameterized queries create separate plans for each parameter instance.

According to the lesson, what are the steps in investigating a report's runtime fluctuation?

There are three correct answers.

Identify the problematic statement.

Identify the timeline of the problematic statement.

Collect full-system-info-dump traces.

Investigate the event between the fast and slow cases.

What is the most crucial first step in identifying the cause of the performance slowdown?

Choose the correct answer.

Identify the specific application server exhibiting high CPU utilization.

Isolate the specific database query or queries responsible for the increased execution time.

Determine the overall network bandwidth consumption during peak hours.

Analyze the operating system's resource usage, such as memory and disk I/O.

What is a common challenge in troubleshooting performance issues in SAP HANA?

Choose the correct answer.

Lack of historical performance data

Insufficient database storage

Limited network connectivity

Outdated application code

What distinguishes a parameterized query from a literal query in SAP HANA?

There are two correct answers.

Parameterized queries use placeholders for values, allowing multiple executions with different values.

Literal queries use fixed values in the query string, without placeholders.

Parameterized queries are always faster than literal queries.

Literal queries can only be executed once.