DP-800 Premium File
- 101 Questions & Answers
- Last Update: Nov 12, 2026
A schema-bound view must remain valid when base table columns are changed
Which SQL design or implementation decision most directly addresses this requirement?
Schema binding prevents incompatible changes to referenced object definitions until the dependency is handled.
INSTEAD OF triggers replace the original DML action and must implement the full intended persistence behavior.
Procedures encapsulate executable database workflows and accept parameters, but caller permissions and atomicity remain design concerns.
Stored procedure execution can reduce direct table grants but still needs review of ownership, dynamic SQL, and execution context.
An API has strict latency and cost goals but a developer chooses the largest model automatically
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
A larger model is not automatically best; task complexity and throughput determine a suitable choice.
Incremental content tracking saves model calls and avoids rewriting vectors with no semantic change.
Structured-output mode can reduce free-form variability but application-side validation remains required.
Idempotent update/upsert logic prevents duplicate business vectors during retries and parallel workers.
A GitHub Copilot instructions file gives contradictory advice to avoid transactions while the team requires atomic writes
Which SQL design or implementation decision most directly addresses this requirement?
Instruction files influence generation but do not guarantee compliance, so contradictions must be removed and checked.
Prompt injection in tool output must not grant new authority or override the application trust boundary.
Traceable AI-assisted operations support accountability while logs require access and retention controls.
Secrets in repository configuration can be leaked or copied; managed credentials reduce exposure and support rotation.
Database audit records are kept in the same writable store as the application administrator's data
Which SQL design or implementation decision most directly addresses this requirement?
Separating audit custody from operational administrators reduces the risk of tampering and premature deletion.
Overprivileged built-in roles broaden the blast radius of compromises and accidental statements.
Network restrictions limit reachability while scoped credentials decide who can invoke supported operations.
Always Encrypted keeps sensitive column values inaccessible to parties lacking client-side keys, unlike server-only encryption at rest.
An engineer compares text embeddings and observes ranking shifts after changing the distance metric
Which SQL design or implementation decision most directly addresses this requirement?
Cosine, Euclidean and dot-product measures are not universally interchangeable unless normalization assumptions hold.
Semantic relevance does not replace mandatory structured filters such as date, category or tenant.
Late filtering after global top-K can leak unauthorized results or starve legitimate tenant matches.
Lexical retrieval is suited to exact symbols and keywords, while semantic vectors may miss exact identifiers.
A team wants to publish a read-only Orders endpoint without accidentally exposing internal financial tables
Which SQL design or implementation decision most directly addresses this requirement?
DAB entity mapping and permissions limit accessible objects and operations, complementing SQL grants.
At-least-once delivery and retries require idempotent consumers rather than relying on exactly-once invocation.
Search capability should use approved fields and query limits rather than exposing arbitrary free-form SQL.
Distributed trace correlation helps associate API failures, dependency latency and service operations.
An AI search API returns vector rows but has no link to their approved source records
Which SQL design or implementation decision most directly addresses this requirement?
Provenance identifiers are needed for source citation, authorization and update/delete handling.
Answer-generation quality cannot reveal all retrieval failures; ranking metrics provide direct measurement.
Distance generally ranks closer vectors by smaller distance values, unlike a similarity score that may rank larger first.
Late filtering after global top-K can leak unauthorized results or starve legitimate tenant matches.
A developer plans to apply generated DDL directly to a critical production table
Which SQL design or implementation decision most directly addresses this requirement?
AI suggestions can contain incorrect assumptions or unsafe migrations and are not self-approving change tickets.
AI-generated rewrites can silently alter authorization or semantics even if syntactically valid.
AI-assisted code generation does not waive data classification, retention and exposure restrictions.
Prompt injection in tool output must not grant new authority or override the application trust boundary.
A semantic retrieval team wants to fuse result lists without assuming both systems produce comparable raw scores
Which SQL design or implementation decision most directly addresses this requirement?
RRF combines positional rankings and avoids directly adding incompatible score scales.
Late filtering after global top-K can leak unauthorized results or starve legitimate tenant matches.
Raw keyword and vector scores may have different ranges and meanings, so naive addition can bias results.
Repeated per-query transformation wastes compute when the model and representation are stable.
An Azure Function must react to updates in a SQL table without a custom polling service
After the team applies the intended design, which observation would most directly verify that the specific requirement was met?
SQL trigger bindings react to detected table changes and require correct change tracking and idempotent handler logic.
Log Analytics supports queryable cross-resource telemetry and Azure Monitor alerting.
Pagination bounds response size and limits database work per request, while stable ordering is essential.
GraphQL relationships make defined SQL relations traversable through the API without arbitrary client SQL.
A legacy table contains an internal reference number that must be encrypted but clients require server-side processing
Which SQL design or implementation decision most directly addresses this requirement?
Server-side column encryption is different from Always Encrypted: the engine may decrypt for authorized server operations.
RLS filter predicates address row visibility while block predicates can stop invalid INSERT/UPDATE operations.
Always Encrypted keeps sensitive column values inaccessible to parties lacking client-side keys, unlike server-only encryption at rest.
Centralized identity management reduces shared-secret exposure and improves attribution and revocation.
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