Reporting features: what capabilities do versatile report generators typically provide to end users and analysts when summarizing data?

Introduction / Context:
Report generators and business intelligence tools transform raw query results into meaningful summaries and presentations. Recognizing their common features helps choose the right tool and design effective reports that inform decisions quickly.

Given Data / Assumptions:

• We consider capabilities provided by typical reporting tools.
• Totals, subtotals, and calculations are standard functions.
• We assume use in tabular, grouped, or matrix layouts.

Concept / Approach:
Versatile report generators allow grouping records (for example, by region or date), computing subtotals per group, columnar totals for entire datasets, and performing calculations such as percentages, ratios, and custom expressions. These features can be parameterized, filtered, and styled to meet business needs.

Step-by-Step Solution:
Identify common operations in reports: sum, count, average, min/max.Relate these to column totals and subtotals via grouping.Acknowledge derived computations (for example, margin = revenue - cost; percent_of_total = value / grand_total).Therefore, select the inclusive choice covering all three capabilities.

Verification / Alternative check:
Survey of mainstream tools (for example, Crystal Reports, SSRS, JasperReports, modern BI platforms) confirms support for grouping, calculated fields, and total/subtotal aggregates.

Why Other Options Are Wrong:
Choosing a single capability understates the typical functionality; comprehensive report generators support all listed features.

Common Pitfalls:
Forgetting to define grouping levels correctly, leading to incorrect subtotals; not handling nulls in calculations; or double-counting when joins expand row counts.

Final Answer:
All of the above