Network security made simple: Security Groups vs NACLs vs Firewalls (and the patterns engineers actually use)
If you’ve ever stared at a “connection timed out” error and thought, “Is it DNS? Is it routing? Is it security groups? Is it the firewall?” —…
50 Azure Data Factory (ADF) interview questions
Here’s a comprehensive list of 50 Azure Data Factory (ADF) interview questions across essential, advanced, and scenario-based levels with answers. This will help you prepare effectively: ✅…
Azure SQL Database – Hyperscale tier, the Standard-series (Gen5) and Premium-series
In Azure SQL Database – Hyperscale tier, the Standard-series (Gen5) and Premium-series hardware options differ in CPU architecture, memory, storage throughput, and performance characteristics. Here’s a clear…
High Availability (HA) replica in Azure SQL Database
What is a High Availability (HA) Replica? Key Features: How Data is Synced Across Replicas: Why Use HA Replicas? Simple Analogy: Think of a high-availability replica like…
Interview Questions on Explain Plan in Azure SQL Database
Interview Questions on Explain Plan in Azure SQL Database Explain Plan (also known as Execution Plan) in Azure SQL Database helps in understanding how the SQL Server…
Top Interview Questions on Query Hints in Azure SQL Database for Performance Optimization
Here are some interview questions related to query hints in Azure SQL Database, along with sample answers: 1. What are query hints in SQL Server or Azure…
Azure SQL Database: Scenario-Based Interview Questions for Query and System Performance Tuning
Here are scenario-based interview questions related to Azure SQL Database query tuning and system performance tuning, along with guidance on how to answer: 1. Scenario: High CPU…
Azure SQL Database query tuning and system performance tuning Interview Questions
Here are some interview questions related to Azure SQL Database query tuning and system performance tuning, along with sample answers: 1. What are common causes of poor…
Primary key constraint with a Clustered index and a regular Clustered index in Azure SQL Database
The primary key constraint with a clustered index and a regular clustered index are similar in how they physically organize data in a table, but they have…
What is a Partitioned Table on Multiple Filegroups in Azure SQL Database?
A partitioned table divides data into smaller, manageable chunks (partitions) based on a partition key (e.g., a date column). These partitions can be stored across multiple filegroups…
Modification of a partition function to add more partitions or change existing boundaries in Azure SQL Database
No, Azure SQL Database does not allow direct modification of a partition function to add more partitions or change existing boundaries. Partition functions in Azure SQL Database…
How to Add Partitioning to an Existing Table in Azure SQL Database
Adding partitioning to an existing table in Azure SQL Database requires the following steps. Unfortunately, you cannot directly apply partitioning to an already populated table. Instead, you…
Explanation of “Unsupported Operations” in Azure SQL Database Partitioning
When using partitioned tables in Azure SQL Database, certain operations are either not supported outright or require special considerations due to the complexities introduced by partitioning. These…
Partition Table in Azure SQL Database
Partitioning tables in Azure SQL Database allows you to manage large tables more efficiently by splitting them into smaller, manageable partitions. These partitions are based on a…
What is Index View in Azure SQL Database?
An indexed view is a view in SQL Server or Azure SQL Database that has a unique clustered index created on it. Unlike a regular view, which…
Error Code 1205 in Azure SQL Database-Deadlock Detected
Error Code 1205 in Azure SQL Database Error Code 1205 occurs in Azure SQL Database when a deadlock is detected. Deadlocks happen when two or more transactions…
Error Code 512 in Azure SQL Database: Subquery Returned More Than One Row
Error Code 512 in Azure SQL Database typically occurs when there is a problem related to query size limits or data constraints. This error may be encountered…
Error Code 18488 in Azure SQL Database: Login Failed: Password Expired
Error Code 18488 in Azure SQL Database occurs when a user tries to connect, but their password has expired or needs to be changed due to security…
Error Code 49919 in Azure SQL Database: Request Rate Is Large
Error Code 49919 – Overview Error Code 49919 in Azure SQL Database occurs when an operation on a database or elastic pool cannot proceed due to resource…
Error Code 49918 in Azure SQL Database: Max Worker Threads Exceeded
Error Code 49918 – Overview Error Code 49918 in Azure SQL Database occurs when the client attempts to create a new database or elastic pool that exceeds…