McAfee-Secured Website

Exam Code: DP-800

Exam Name: Developing AI-Enabled Database Solutions

Certification Provider: Microsoft

Corresponding Certification: Microsoft Certified: SQL AI Developer Associate

Questions & Answers

100% Microsoft DP-800 Guaranteed Success With Testking Training Materials

Get Real DP-800 Exam Questions & Expert Verified Answers as Experienced on the Real Exam!

Questions & Answers

101 Questions & Answers with Testing Engine

"Developing AI-Enabled Database Solutions Exam", also known as DP-800 exam, is a Microsoft certification exam.

Pass your tests with the always up-to-date DP-800 Exam Engine. Your DP-800 training materials keep you at the head of the pack!

Satisfaction Guaranteed

Money Back Guarantee

Testking provides hassle-free money back guarantee with our products. That is because we have 100% trust in the abilities of our professional and experience product team, and our record is a proof of that.

99.6% PASS RATE
Was: $137.49
Now: $124.99

Microsoft DP-800 Practice Test 6

Question 50

A session-cache workload needs low-latency access and can tolerate memory-optimized table constraints. Which verification finding is most specific to this scenario?

  1. Historical queries can distinguish transaction history from independently entered business-effective intervals.
  2. Round-trip storage and equality tests preserve account identifiers without unintended padding or truncation.
  3. A load test shows reduced contention and recovery behavior consistent with the chosen durability.
  4. The app reads approved profile fields and cannot access restricted source columns.

Explanation

Correct Answer

C:

In-memory OLTP uses a different engine/index architecture and requires explicit feature/compatibility assessment. The observation “A load test shows reduced contention and recovery behavior consistent with the chosen durability” directly confirms the chosen action worked for this situation: A session-cache workload needs low-latency access and can tolerate memory-optimized table constraints.

Incorrect Answers

A:

System time records database validity, not necessarily application-defined effective time. This observation would not establish that the required result occurred for A session-cache workload needs low-latency access and can tolerate memory-optimized table constraints. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

B:

CHAR uses fixed-width padding; variable-width text types better fit identifiers whose lengths differ. This observation would not establish that the required result occurred for A session-cache workload needs low-latency access and can tolerate memory-optimized table constraints. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

D:

Views can provide a data-access interface when underlying object permissions are managed appropriately. This observation would not establish that the required result occurred for A session-cache workload needs low-latency access and can tolerate memory-optimized table constraints. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

Question 51

A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. Which approach achieves the intended result without bypassing the stated controls?

  1. Evaluate SQL ledger tables and digest verification for tamper-evident data.
  2. Prefer a rowstore access path for selective OLTP lookups and updates.
  3. Evaluate a memory-optimized table and supported durability/index options after testing workload fit.
  4. Configure repository-level Copilot instruction files specifying SQL conventions and approved practices.

Explanation

Correct Answer

C:

In-memory OLTP uses a different engine/index architecture and requires explicit feature/compatibility assessment. For the described situation—A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing—the targeted fix is Evaluate a memory-optimized table and supported durability/index options after testing workload fit. A successful test should show: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

Incorrect Answers

A:

Ledger adds cryptographic tamper-evidence; temporal history alone is not cryptographic proof. But that technique does not solve the stated problem—A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The needed intervention is Evaluate a memory-optimized table and supported durability/index options after testing workload fit.

B:

Rowstore B-tree indexes suit selective transactional operations better than bulk-column analytical access in this workload. But that technique does not solve the stated problem—A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The needed intervention is Evaluate a memory-optimized table and supported durability/index options after testing workload fit.

D:

Copilot instruction files guide generated suggestions but do not enforce database permissions or accuracy. But that technique does not solve the stated problem—A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The needed intervention is Evaluate a memory-optimized table and supported durability/index options after testing workload fit.

Question 52

A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. How should the team validate the selected design?

  1. Invalid values are rejected consistently by interactive and bulk database writes.
  2. A load test shows reduced contention and recovery behavior consistent with the chosen durability.
  3. Measured joins avoid redundant lookups and fragmentation stays controlled during inserts.
  4. Eligible users can invoke the approved experience while policy restrictions remain enforced.

Explanation

Correct Answer

B:

In-memory OLTP uses a different engine/index architecture and requires explicit feature/compatibility assessment. The observation “A load test shows reduced contention and recovery behavior consistent with the chosen durability” directly confirms the chosen action worked for this situation: A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing.

Incorrect Answers

A:

CHECK constraints enforce domain predicates within the database on all supported write paths. This observation would not establish that the required result occurred for A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

C:

Clustered-key width and volatility affect nonclustered index storage and insert maintenance. This observation would not establish that the required result occurred for A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

D:

Copilot availability depends on supported platform settings and entitlements, not only local IDE configuration. This observation would not establish that the required result occurred for A high-throughput order queue shows latch contention that may benefit from in-memory transaction processing. The confirming test is: A load test shows reduced contention and recovery behavior consistent with the chosen durability.

Question 53

A graph of people and affiliations has many relationship traversals rather than fixed relational joins. What intervention should the responsible engineer choose?

  1. Design a nonclustered index with appropriate leading tenant and timestamp keys and useful INCLUDE columns.
  2. Declare a FOREIGN KEY from child OrderID to the parent order key.
  3. Consider SQL graph node and edge tables with MATCH-style relationship queries.
  4. Use a supported SQL graph MATCH expression across declared node and edge aliases.

Explanation

Correct Answer

C:

Graph tables express nodes and directed edges for relationships; they do not eliminate security constraints. For the described situation—A graph of people and affiliations has many relationship traversals rather than fixed relational joins—the targeted fix is Consider SQL graph node and edge tables with MATCH-style relationship queries. A successful test should show: A multi-hop traversal returns the expected connected entities under controlled samples.

Incorrect Answers

A:

An index keyed by selective predicates improves retrieval when its order follows workload filters and sorts. But that technique does not solve the stated problem—A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

B:

A foreign key maintains referential integrity across transactions rather than relying on application checks. But that technique does not solve the stated problem—A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

D:

MATCH expresses graph patterns over node and edge relationships in SQL graph queries. But that technique does not solve the stated problem—A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

Question 54

A graph of people and affiliations has many relationship traversals rather than fixed relational joins. What observable outcome proves the recommendation worked?

  1. Duplicate non-null emails fail while multiple missing values behave per the documented rule.
  2. A multi-hop traversal returns the expected connected entities under controlled samples.
  3. Representative queries show selective seeks and fewer lookups without unacceptable write overhead.
  4. Each row displays the correct preceding value, and first rows produce the specified default.

Explanation

Correct Answer

B:

Graph tables express nodes and directed edges for relationships; they do not eliminate security constraints. The observation “A multi-hop traversal returns the expected connected entities under controlled samples” directly confirms the chosen action worked for this situation: A graph of people and affiliations has many relationship traversals rather than fixed relational joins.

Incorrect Answers

A:

SQL Server UNIQUE and filtered unique indexes differ in how missing values can be represented. This observation would not establish that the required result occurred for A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

C:

An index keyed by selective predicates improves retrieval when its order follows workload filters and sorts. This observation would not establish that the required result occurred for A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

D:

LAG reads a preceding row within a partition without a self-join for each row. This observation would not establish that the required result occurred for A graph of people and affiliations has many relationship traversals rather than fixed relational joins. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

Question 55

A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. Which design choice BEST addresses the root issue?

  1. Use DECIMAL or NUMERIC with suitable precision and scale for monetary amounts.
  2. Use a system-versioned temporal table with its history table properly configured.
  3. Implement an appropriate inline table-valued function with parameters.
  4. Consider SQL graph node and edge tables with MATCH-style relationship queries.

Explanation

Correct Answer

D:

Graph tables express nodes and directed edges for relationships; they do not eliminate security constraints. For the described situation—A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities—the targeted fix is Consider SQL graph node and edge tables with MATCH-style relationship queries. A successful test should show: A multi-hop traversal returns the expected connected entities under controlled samples.

Incorrect Answers

A:

Binary floating point is approximate whereas fixed-precision decimal represents defined decimal places. But that technique does not solve the stated problem—A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

B:

Temporal tables automatically retain historical row versions keyed by system time. But that technique does not solve the stated problem—A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

C:

An inline TVF exposes a composable table expression whereas a scalar UDF returns one value. But that technique does not solve the stated problem—A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The needed intervention is Consider SQL graph node and edge tables with MATCH-style relationship queries.

Question 56

A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. Which result would provide the strongest acceptance evidence?

  1. Concurrent requests receive nonduplicated sequence values without assuming gapless numbering.
  2. Ledger verification detects unexpected history modification and digest custody is independently documented.
  3. A multi-hop traversal returns the expected connected entities under controlled samples.
  4. The TVF joins efficiently to callers and returns correct results across parameter values.

Explanation

Correct Answer

C:

Graph tables express nodes and directed edges for relationships; they do not eliminate security constraints. The observation “A multi-hop traversal returns the expected connected entities under controlled samples” directly confirms the chosen action worked for this situation: A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities.

Incorrect Answers

A:

A sequence is an independent number generator and gaps are possible after rollbacks or caching. This observation would not establish that the required result occurred for A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

B:

Ledger adds cryptographic tamper-evidence; temporal history alone is not cryptographic proof. This observation would not establish that the required result occurred for A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

D:

Inline TVFs can be expanded into the caller's plan and avoid unnecessary procedural materialization. This observation would not establish that the required result occurred for A recommendation feature needs to query multi-hop relationships between customer, account, and referral entities. The confirming test is: A multi-hop traversal returns the expected connected entities under controlled samples.

Question 57

A dataset in remote storage must be queried by SQL without importing every file into local tables. What should the database team change FIRST for this workload?

  1. Create a composite UNIQUE constraint on SupplierID and InvoiceNumber.
  2. Choose a tested uniqueness rule, such as a filtered unique index for present emails, matching SQL Server NULL semantics.
  3. Use sp_executesql with typed parameters and allowlist any necessary object identifiers.
  4. Configure an external data source and external table according to the platform's supported connectors.

Explanation

Correct Answer

D:

External tables expose remote records through SQL abstraction subject to connector and authentication support. For the described situation—A dataset in remote storage must be queried by SQL without importing every file into local tables—the targeted fix is Configure an external data source and external table according to the platform's supported connectors. A successful test should show: Queries access the intended authorized remote data without materializing an unrelated local copy.

Incorrect Answers

A:

A multicolumn UNIQUE constraint enforces pairwise uniqueness in the engine under concurrent inserts. But that technique does not solve the stated problem—A dataset in remote storage must be queried by SQL without importing every file into local tables. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

B:

SQL Server UNIQUE and filtered unique indexes differ in how missing values can be represented. But that technique does not solve the stated problem—A dataset in remote storage must be queried by SQL without importing every file into local tables. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

C:

Parameterized dynamic SQL separates values from executable statements and reduces injection risk. But that technique does not solve the stated problem—A dataset in remote storage must be queried by SQL without importing every file into local tables. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

Question 58

A dataset in remote storage must be queried by SQL without importing every file into local tables. Which acceptance check should accompany the remediation?

  1. An AS OF query reproduces prior credit-limit values while current rows remain accessible.
  2. A multi-hop traversal returns the expected connected entities under controlled samples.
  3. Queries access the intended authorized remote data without materializing an unrelated local copy.
  4. Unit tests confirm one value per supported argument combination without hidden mutations.

Explanation

Correct Answer

C:

External tables expose remote records through SQL abstraction subject to connector and authentication support. The observation “Queries access the intended authorized remote data without materializing an unrelated local copy” directly confirms the chosen action worked for this situation: A dataset in remote storage must be queried by SQL without importing every file into local tables.

Incorrect Answers

A:

Temporal tables automatically retain historical row versions keyed by system time. This observation would not establish that the required result occurred for A dataset in remote storage must be queried by SQL without importing every file into local tables. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

B:

Graph tables express nodes and directed edges for relationships; they do not eliminate security constraints. This observation would not establish that the required result occurred for A dataset in remote storage must be queried by SQL without importing every file into local tables. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

D:

A scalar function encapsulates a single-result expression, not a full transaction workflow. This observation would not establish that the required result occurred for A dataset in remote storage must be queried by SQL without importing every file into local tables. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

Question 59

Analysts need to read a supported external dataset while retaining ownership in another storage service. Which implementation most directly satisfies the stated requirement?

  1. Configure an external data source and external table according to the platform's supported connectors.
  2. Choose lean indexes with INCLUDE columns only where read savings justify write and storage costs.
  3. Select a length-appropriate VARCHAR or NVARCHAR type with explicit normalization requirements.
  4. Create a least-privilege projection view and grant SELECT on only that interface.

Explanation

Correct Answer

A:

External tables expose remote records through SQL abstraction subject to connector and authentication support. For the described situation—Analysts need to read a supported external dataset while retaining ownership in another storage service—the targeted fix is Configure an external data source and external table according to the platform's supported connectors. A successful test should show: Queries access the intended authorized remote data without materializing an unrelated local copy.

Incorrect Answers

B:

Excessively broad indexes increase storage and maintenance; covering columns should match measured workloads. But that technique does not solve the stated problem—Analysts need to read a supported external dataset while retaining ownership in another storage service. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

C:

CHAR uses fixed-width padding; variable-width text types better fit identifiers whose lengths differ. But that technique does not solve the stated problem—Analysts need to read a supported external dataset while retaining ownership in another storage service. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

D:

Views can provide a data-access interface when underlying object permissions are managed appropriately. But that technique does not solve the stated problem—Analysts need to read a supported external dataset while retaining ownership in another storage service. The needed intervention is Configure an external data source and external table according to the platform's supported connectors.

Question 60

Analysts need to read a supported external dataset while retaining ownership in another storage service. What measurement or test best demonstrates that the requirement is satisfied?

  1. Representative point reads and writes meet latency and locking targets.
  2. Filtered JSON queries use the intended supported index and preserve valid document content.
  3. Queries access the intended authorized remote data without materializing an unrelated local copy.
  4. The query returns the expected extracted token and handles missing matches correctly.

Explanation

Correct Answer

C:

External tables expose remote records through SQL abstraction subject to connector and authentication support. The observation “Queries access the intended authorized remote data without materializing an unrelated local copy” directly confirms the chosen action worked for this situation: Analysts need to read a supported external dataset while retaining ownership in another storage service.

Incorrect Answers

A:

Rowstore B-tree indexes suit selective transactional operations better than bulk-column analytical access in this workload. This observation would not establish that the required result occurred for Analysts need to read a supported external dataset while retaining ownership in another storage service. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

B:

Modern SQL JSON indexes can accelerate supported path predicates; older SQL versions require alternative indexing strategies. This observation would not establish that the required result occurred for Analysts need to read a supported external dataset while retaining ownership in another storage service. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

D:

REGEXP_SUBSTR extracts matching text; REGEXP_LIKE only evaluates whether a match exists. This observation would not establish that the required result occurred for Analysts need to read a supported external dataset while retaining ownership in another storage service. The confirming test is: Queries access the intended authorized remote data without materializing an unrelated local copy.

Developing AI-Enabled Database Solutions (DP-800) Practice Tests