Skip to content

Tracks Drills Topics Technologies Tech stacks Skill areas

Tracks Drills Topics

Loading

Aporeon interview preparation

About Privacy Terms

.NET Full Stack

Data Integrity & Transactions

Transactions, concurrency, constraints, tenant isolation, soft delete, audit data, outbox consistency, and retry boundaries.

14 drillsPractice one at a timeOrdered pathArchitecture scenarioDebugging scenarioConcept questionComparison question

Recommended start

Transaction Boundaries

Draws a short atomic database boundary around one invariant while moving network side effects into explicit, recoverable workflow states.

Hard~12 minStep 1 of 14

Practice this drill Choose another

Search

14 of 14 shown

1Transaction BoundariesRecommended startDraws a short atomic database boundary around one invariant while moving network side effects into explicit, recoverable workflow states.Architecture scenarioHard~12 min.NETC#EF CorePractice 2

Practice order

14 drillsOne at a time

1Transaction BoundariesUp next / Hard / ~12 min
2SQL DeadlocksHard / ~12 min
3Isolation LevelsHard / ~9 min
4

SQL DeadlocksUses deadlock evidence to correct EF Core transaction scope, query plans, and resource order, with bounded retries only for repeat-safe victims.Debugging scenarioHard~12 min.NETC#EF Core

Practice

3Isolation LevelsExplains transaction isolation levels with practical .NET data-access examples and production trade-offs.Concept questionHard~9 min.NETC#EF CorePractice

4Optimistic ConcurrencyDesigns an EF Core optimistic-concurrency contract around tokens, conflict policy, HTTP semantics, merge behavior, and real relational tests.Concept questionHard~9 min.NETC#EF CorePractice

5Constraints vs ValidationExplains database constraints versus application validation with practical .NET data-access examples and production trade-offs.Comparison questionMedium~7 min.NETC#EF CorePractice

6Soft DeleteExplains soft delete in EF Core APIs with practical .NET data-access examples and production trade-offs.Architecture scenarioMedium~10 min.NETC#EF CorePractice

7Tenant FilteringExplains multi-tenant data filtering with practical .NET data-access examples and production trade-offs.Architecture scenarioHard~12 min.NETC#EF CorePractice

8Audit FieldsExplains audit fields and data change tracking with practical .NET data-access examples and production trade-offs.Architecture scenarioMedium~10 min.NETC#EF CorePractice

9Outbox PatternUses a transactional outbox to make a local state change durably publishable while accepting at-least-once delivery and operating the backlog safely.System designHard~20 min.NETC#EF CorePractice

10Transaction OutboxExplains how EF Core SaveChanges, transactions, and an outbox keep database changes and messages consistent.Architecture scenarioHard~12 min.NETASP.NET CoreAzure Service BusPractice

11Rowversion ConflictsExplains optimistic concurrency with EF Core rowversion tokens, API conflict responses, and safe retry boundaries.Architecture scenarioHard~12 min.NETASP.NET CoreEF CorePractice

12Constraint RacesExplains why application-level duplicate checks are not enough and how EF Core APIs map database constraints to friendly errors.Concept questionMedium~7 min.NETASP.NET CoreEF CorePractice

13Tenant FiltersExplains how tenant query filters help, where they can be bypassed, and what extra safeguards protect tenant isolation.Architecture scenarioHard~12 min.NETASP.NET CoreEF CorePractice

14Execution StrategyMakes EF Core transient retries safe across transactions, uncertain commits, generated keys, and external side effects.Concept questionHard~9 min.NETASP.NET CoreAzurePractice

Optimistic Concurrency

Hard / ~9 min

5Constraints vs ValidationMedium / ~7 min

6Soft DeleteMedium / ~10 min

7Tenant FilteringHard / ~12 min

8Audit FieldsMedium / ~10 min

+6 more drills in this section

Data Integrity & Transactions - .NET Full Stack | Aporeon