TIBCO Data Connections and Data Sources 2 — Questions and Answers
Question 1: What is 'Data on Demand' in TIBCO Spotfire?
- A paid feature for purchasing external datasets
- A mode where data is loaded automatically based on user selections such as markings or filter values (Correct answer)
- A batch process that downloads data overnight
- A streaming feature for real-time IoT data
Correct answer: A mode where data is loaded automatically based on user selections such as markings or filter values
Data on Demand retrieves data dynamically based on user interactions, such as when a user marks a data point or changes a filter, reducing initial load time.
Question 2: Which operation in TIBCO Spotfire combines columns from two data tables using a shared key column?
- Add Rows
- Add Columns (Correct answer)
- Union
- Append
Correct answer: Add Columns
The 'Add Columns' operation performs a join between two data tables based on one or more matching key columns, adding new columns to the existing table.
Question 3: What is the TIBCO Spotfire Library primarily used for in the context of data connections?
- Storing local backup copies of .dxp files on each user's machine
- A centralized server-side repository for sharing analyses, Information Links, and data connection definitions (Correct answer)
- A local cache directory for downloaded CSV files
- A log of all past database queries executed by Spotfire
Correct answer: A centralized server-side repository for sharing analyses, Information Links, and data connection definitions
The Spotfire Library is a server-side repository that enables teams to share analyses, Information Links, and other assets across the organization.
Question 4: What does a parameterized Information Link allow in TIBCO Spotfire?
- It links two separate analyses together in the same browser tab
- It accepts user-supplied input values to filter or customize the data retrieved from a data source (Correct answer)
- It automatically updates parameters based on the server clock
- It encrypts parameters before sending them to the database
Correct answer: It accepts user-supplied input values to filter or customize the data retrieved from a data source
Parameterized Information Links accept runtime inputs (e.g., date range or category) so users can dynamically control what data is loaded.
Question 5: What happens when a user clicks 'Refresh Data' in a TIBCO Spotfire analysis that uses linked data sources?
- Only the currently visible page is recalculated
- All linked data sources are re-queried to retrieve the latest data from the source (Correct answer)
- The analysis file is deleted and must be rebuilt from scratch
- Embedded data tables are overwritten from a local file
Correct answer: All linked data sources are re-queried to retrieve the latest data from the source
Refreshing data re-executes the queries for all linked data sources, pulling in any updates that have occurred since the last load.
Question 6: When combining two data tables using 'Add Rows' in TIBCO Spotfire, what must be true about the two tables?
- They must have identical row counts
- They must share at least one column with matching names and compatible data types for alignment (Correct answer)
- They must both be embedded, not linked
- They must come from the same database connection
Correct answer: They must share at least one column with matching names and compatible data types for alignment
When adding rows, Spotfire uses column matching by name and type to align data; columns that match are stacked, and non-matching columns get null values.
Question 7: In TIBCO Spotfire, which connection approach is best suited for analyzing datasets too large to load into memory?
- Embedded data mode
- Linked flat-file mode
- In-database mode (Correct answer)
- Data on Demand with a 100-row limit
Correct answer: In-database mode
In-database mode keeps the data in the source database and pushes query processing there, making it the right choice for very large datasets.
TIBCO Data Connections and Data Sources 2
What is 'Data on Demand' in TIBCO Spotfire?