DP-800 Premium File
- 101 Questions & Answers
- Last Update: Nov 12, 2026
Repeated public catalog reads overload SQL even though the underlying product list rarely changes
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Caching reduces repeat database load but introduces staleness and must avoid exposing user-specific sensitive results.
Search capability should use approved fields and query limits rather than exposing arbitrary free-form SQL.
Pagination bounds response size and limits database work per request, while stable ordering is essential.
Logic Apps orchestrate heterogeneous connectors and retries more directly than embedding cross-service calls in a SQL trigger.
An employee report must show percentage of team revenue beside every employee row
Which SQL design or implementation decision most directly addresses this requirement?
Window aggregates retain detail rows while computing group-level results, unlike GROUP BY which collapses rows.
DENSE_RANK retains equal ranks for ties while the next distinct value advances by one.
JSON_OBJECT produces correctly structured JSON property/value pairs and avoids manual quoting errors.
JSON_ARRAYAGG aggregates scalar or JSON values into an array, reducing custom string assembly.
A Fabric copilot session is given a lakehouse MCP tool that can enumerate more databases than the user needs
Which SQL design or implementation decision most directly addresses this requirement?
AI-tool access should follow user authorization and workspace boundaries rather than tool availability alone.
Least privilege reduces the impact of prompt injection, mistaken tool calls and credential disclosure.
Secrets in repository configuration can be leaked or copied; managed credentials reduce exposure and support rotation.
Model choice affects capability and governance, and prompts must stay within the approved service boundary.
A chatbot returns irrelevant full-document passages because each entire file is embedded as one vector
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Chunk size and overlap trade off retrieval specificity and lost context; arbitrary whole-file chunks are often weak.
Structured-output mode can reduce free-form variability but application-side validation remains required.
Logic Apps coordinates cross-service actions and retries but does not eliminate the need for idempotency.
Vector similarity does not enforce authorization; retrieval still needs tenant/ACL filters.
A new API developer proposes running a procedure as though it were a table-valued expression in a JOIN
Which SQL design or implementation decision most directly addresses this requirement?
Views and TVFs are relational query sources; stored procedures are invoked with EXEC and do not act as arbitrary table expressions.
Uncontrolled trigger nesting can cause excess DML, recursion failures, and transactional contention.
Schema binding prevents incompatible changes to referenced object definitions until the dependency is handled.
Views can serve as a restricted interface but must be combined with appropriate permissions and row filtering.
A status dashboard repeatedly filters on an indexed timestamp yet plans show scans
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Avoiding functions on the indexed search column can let the optimizer use an index seek.
Partition switching has schema and index-alignment prerequisites; an incompatible index can block the metadata operation.
Covering indexes can avoid residual lookups while keeping included attributes out of the search-key ordering.
Columnstore compression and batch execution are effective on broad aggregations; they are not universally best for singleton OLTP updates.
A text search indexes every field including private account notes that should be excluded
Which SQL design or implementation decision most directly addresses this requirement?
Index membership can make data discoverable; search permission cannot be inferred from index design.
Semantic relevance does not replace mandatory structured filters such as date, category or tenant.
RRF combines positional rankings and avoids directly adding incompatible score scales.
Vector properties help validate dimensions and related characteristics before comparison or indexing.
An employee table has a surrogate primary key but work email must also be unique
Which SQL design or implementation decision most directly addresses this requirement?
Uniqueness for non-primary business attributes is enforced separately from the surrogate primary key.
A predicate-limited index has fewer rows to maintain and can serve a matching selective WHERE clause.
A 64-bit integer provides a much larger identifier range; relationships and clients must accept the chosen type.
Avoiding functions on the indexed search column can let the optimizer use an index seek.
A security team needs to query SQL performance logs alongside DAB request telemetry over a month
Which SQL design or implementation decision most directly addresses this requirement?
Log Analytics supports queryable cross-resource telemetry and Azure Monitor alerting.
SQL trigger bindings react to detected table changes and require correct change tracking and idempotent handler logic.
API filtering reduces unnecessary result transfer but cannot replace server-side authorization.
CES can publish database changes into an event architecture, but supported platform and ordering guarantees must be checked.
An Azure service needs correlated end-to-end request traces for SQL-backed user actions
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
Distributed trace correlation helps associate API failures, dependency latency and service operations.
DAB reads configuration to expose chosen database objects as endpoints, subject to role and permission controls.
Application identity, API entity permissions and SQL authorization must jointly prevent overbroad access.
CES can publish database changes into an event architecture, but supported platform and ordering guarantees must be checked.
Incoming webhook payloads sometimes contain malformed JSON and cause downstream failures
Which SQL design or implementation decision most directly addresses this requirement?
Checking JSON validity before promotion reduces malformed documents but does not replace application-level schema validation.
Uniqueness for non-primary business attributes is enforced separately from the surrogate primary key.
Avoiding functions on the indexed search column can let the optimizer use an index seek.
JSON storage supports evolving attributes, but constraints and relational columns should still enforce critical business invariants.
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