Hey Folks,
The objective of this blog post is to guide you through out the questionnaire that is being asked now a day from interviewer regrading Postgres Database.
Below are some list of Interview questions:
Installation:
Types of Installations: What are the different methods for installing PostgreSQL?
Pre-Requisites: What are the pre-requisites for installing PostgreSQL?
Pre-Requisite Verification: How can you verify if the pre-requisites are met before installation?
Installation Methods Comparison: What are the main differences between the YUM and Source Code methods for installation?
Client Installation: What does “client installation” refer to in PostgreSQL?
Installing Client Software: How do you install only the client software using YUM, RPM, or Source Code methods?
Client Installation Verification: How do you verify if the client software is installed?
Client Installation Location: How can you locate where the client software is installed?
Bin Directory Utilities: What is the bin directory, and what utilities can be found there?
Software Directory Structure: Explain the directories available in the PostgreSQL software installation location.
Data Directory: What is the data directory, and what is its purpose?
Default Locations: What are the default home and data directory locations for installations via YUM, RPM, Source Code, and Windows?
Custom Data Directory: How can you create and use a custom data directory instead of the default?
Disk Filesystem: What is the importance of disk filesystems in PostgreSQL?
Superuser Roles: What is the role of a superuser at both the OS and Database levels?
Uninstallation Methods: How do you uninstall PostgreSQL using each installation method?
Software Location: How can you locate the installed PostgreSQL software?
Latest Version: What is the latest version of PostgreSQL available?
Parameter File Location: How can you find the parameter file location in a PostgreSQL cluster?
Installed RPMs: How can you see the list of installed RPMs?
Pre and Post-Installation: What are the key tasks to perform before and after installation?
Default Port: What is the default port for PostgreSQL?
Custom Port: How can you configure PostgreSQL to use a custom port instead of the default?
PgAdmin:
Introduction: What is PgAdmin?
Linux Server Connection: How do you connect to a Linux server using PgAdmin?
Windows Server Connection: How do you connect to a Windows server using PgAdmin?
Server Management: How do you create and remove a server in PgAdmin?
Database Management: How do you create and remove a database in PgAdmin?
Schema Management: How do you create and remove schemas in PgAdmin?
Table Management: How do you create and remove tables in PgAdmin?
User and Role Management: How do you create and manage users and roles in PgAdmin?
Binary Path Configuration: How do you set the binary path in PgAdmin?
Backup & Restore: How do you perform backup and restore operations in PgAdmin?
Table Definition: How can you view table definitions in PgAdmin?
Remote Connection:
Pre-Requisites: What are the pre-requisites for establishing a remote connection?
Security Measures: What security methods should be followed when providing remote access?
Configuration Files: Which configuration files are used for remote connections?
Remote Connection Overview: What is a remote connection in PostgreSQL?
Cluster Configuration:
Cluster Definition: What is a cluster in PostgreSQL?
Cluster Creation: How do you create a cluster on a server?
Cluster Pre-Requisites: What are the pre-requisites for creating a cluster?
Cluster Utilities: What utilities are used to create, start, and stop a cluster?
Shutdown Modes & Database Management:
Shutdown Methods: What are the different types of shutdown methods in PostgreSQL?
Shutdown Utility: What utility is used to shut down a cluster?
Database Creation: How do you create a database, and what happens in the backend?
Template Databases: What is a template database, and how many are there by default? How can you convert between template and normal database?
Database Switching: How do you switch from one database to another?
Database Size & Ownership: How can you check the size of a database and change its owner?
Catalog Views, Schema Management & Logging:
Catalog Views: What are catalog views, and where are they stored?
Schema Management: What is the default schema in PostgreSQL, and how can you manage schemas?
Logging Mechanism: What is the default logging mechanism in PostgreSQL, and how can it be configured?
Contrib Modules & Parameters:
Contrib Modules: What are contrib modules, and how do you install them?
Cluster Parameters: What are the different parameters available in a PostgreSQL cluster, and how are they managed?
User Management & Session Handling:
User vs Role: What is the difference between a user and a role in PostgreSQL?
User Privileges: How do you check and manage user privileges?
Architecture & Postmaster:
PostgreSQL Architecture: Explain the architecture of a PostgreSQL database.
Memory Management: What are shared and local memory, and how are they managed?
WAL File Management:
WAL Files: What is a Write-Ahead Log (WAL), and how is it managed in PostgreSQL?
Archiving: What is archiving in PostgreSQL, and how do you enable it?
Backups & Tablespaces:
Backup Types: What are the different types and formats of backups in PostgreSQL?
Tablespaces: What are tablespaces, and how are they managed?
Performance Tuning:
Performance Issues: How do you identify and resolve performance issues in a PostgreSQL database?
Query Tuning: What is query tuning, and how is it performed?
Replication:
High Availability & Replication: What is high availability, and how is replication configured in PostgreSQL?
Upgradation & Monitoring Tools:
Version Upgradation: What are the steps for upgrading PostgreSQL versions?
Monitoring Tools: What are PgBadger and PgBouncer, and how are they used?
What challenges have you faced while working with PostgreSQL, and how did you resolve them?
Hope it helped, Keep Learning !! 🙂