In data warehousing and OLTP contexts, most operational (day-to-day) information systems are designed around transient data that is updated in place rather than kept as historical snapshots. Is this statement accurate?

Difficulty: Easy

Correct Answer: Correct

Explanation:


Introduction / Context:
Operational systems (also called OLTP systems) support day-to-day business processes such as order entry, invoicing, and inventory adjustments. This question checks your understanding of the difference between transient data (updated in place) and periodic data (append-only history), and which one is typical for operational workloads.



Given Data / Assumptions:

  • Operational systems prioritize fast inserts/updates for current state.
  • Historical trend analysis is not the primary goal; it is typically handled elsewhere (data warehouses or data lakes).
  • Terminology: “transient data” = update-in-place; “periodic data” = never physically altered once stored.


Concept / Approach:
In OLTP design, rows commonly represent the current truth. When a customer’s address changes, the same record is updated (transient behavior). This keeps tables smaller and queries fast for operational users. In contrast, analytics needs history; data warehouses record changes as additional rows (periodic behavior) to enable time-series reporting. Understanding where each style fits improves schema design and ETL planning.



Step-by-Step Solution:

Identify the system type: operational vs. analytical.Map requirement: operational → current state queries and short transactions.Choose data behavior: update-in-place (transient) for operational consistency and performance.Route history needs to downstream warehouse/marts using periodic structures.


Verification / Alternative check:
Inspect audit trails: if the production tables show a single “current” record per business key and change history is kept in separate audit/warehouse tables, the system uses transient data in the core OLTP layer.



Why Other Options Are Wrong:

  • “Incorrect” conflicts with standard OLTP practice.
  • “Applies only to data warehouses/analytical workloads” inverts the roles; warehouses favor periodic, not transient.
  • “Depends exclusively on the file system” misunderstands that this is a modeling and workload choice, not a storage-format feature.


Common Pitfalls:
Expecting operational tables to hold long-term history, which bloats tables and slows transactions. Best practice is to offload history to analytic stores while keeping OLTP lean.



Final Answer:
Correct

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