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Database Administrator (DBA) Interview Preparation Guide Prepared for: Scalong AI — Junior DBA Role This document covers all theoretical concepts you need to understand before your DBA interview. It is written for a fresher/intern level and explains each topic in depth with clear explanations. Table of Contents SQL Server Administration Performance Tuning High Availability (HA) Concepts Windows Server Basics PostgreSQL Basics SSIS and SSRS Production Environment Mindset Tools Used by DBAs 1. SQL Server Administration What is SQL Server? Microsoft SQL Server is a Relational Database Management System (RDBMS) developed by Microsoft. It stores, retrieves, and manages structured data using the SQL language. SQL Server is widely used in enterprise environments and is the core tool you will use as a DBA at Scalong AI. ...

Introduction The inode table is one of the most fundamental data structures in Linux filesystems, yet it remains mysterious to many users. An inode, short for index node, is essentially a data structure that stores all the metadata about a file or directory except for two crucial pieces of information: the filename itself and the actual file content. This separation of concerns is what makes Unix-like filesystems elegant and efficient. ...