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Data Virtualization Flashcards

7 cards from real TIBCO practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Data Virtualization flashcards as text

  1. In TDV, what is 'push-down optimization' and why is it beneficial?

    Answer: Delegating query filtering and aggregation to the source system to reduce data transferred to TDV

    Push-down optimization sends WHERE clauses, joins, and aggregations to the source engine, minimizing data movement and improving performance.

  2. Which TDV Studio feature lets developers visually join two virtual tables by dragging columns onto a canvas?

    Answer: Query Modeler

    The Query Modeler in TDV Studio provides a graphical interface for building join conditions and combining virtual resources.

  3. When a TDV view has caching enabled, what triggers a cache refresh by default?

    Answer: On a configured schedule or when the cache is explicitly cleared

    TDV cache refresh is driven by a configured time-based schedule or a manual/API-triggered invalidation, not real-time source change detection.

  4. What TDV concept describes organizing virtual resources into a hierarchical namespace similar to a file system?

    Answer: Resource tree (catalog/schema/resource)

    TDV organizes all virtual resources in a catalog-schema-resource hierarchy that mirrors relational naming conventions.

  5. In TDV, which protocol is most commonly used when exposing virtual data to BI tools like Tableau or MicroStrategy?

    Answer: JDBC/ODBC

    BI tools connect to TDV using JDBC or ODBC drivers, treating TDV like a standard relational database.

  6. What is the purpose of TDV's 'data lineage' feature?

    Answer: To trace the origin and transformation path of data from source to consumer

    Data lineage in TDV maps how data flows from physical sources through transformations to end consumers, supporting governance and impact analysis.

  7. Which TDV component is responsible for translating source-specific SQL dialects into TDV's internal query representation?

    Answer: Data Source Adapter

    Data Source Adapters handle dialect translation, converting TDV's internal query into the specific SQL or API format required by each source.

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