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Technical Articles

Database

Mysql Tutorial

How to check which tables contain data in the database

This article explores methods for identifying data-containing database tables. It compares querying metadata (e.g., using MySQL's information_schema) with more efficient approaches like the EXISTS clause, which avoids full row counts. Database mana

Mar 04, 2025 pm 03:51 PM

Beginner's Guide to MySQL Character Sets and Collisions

This guide addresses MySQL role and permission conflicts. Improperly configured roles cause functional issues and security risks. It details common causes (inconsistent assignments, overlapping roles, inheritance issues), management strategies (RBA

Mar 04, 2025 pm 03:50 PM

Running multiple MySQL versions on MacOS: A step-by-step guide

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

Mar 04, 2025 pm 03:49 PM

Which should you use mysql utfs utfs?

This article argues for using UTF8MB4 over UTF8 in MySQL databases. UTF8MB4, a 4-byte encoding, supports full Unicode, including emojis, unlike the older, 3-byte UTF8 (utf8mb3) which limits support to the Basic Multilingual Plane. While UTF8MB4 has

Mar 04, 2025 pm 03:48 PM

Connection pooling in backend development: basic concepts, benefits and implementation

This article explores backend database connection pooling, highlighting its benefits (reduced latency, improved resource utilization, enhanced scalability) and common pitfalls (insufficient pool size, leaked connections, improper timeouts). It empha

Mar 04, 2025 pm 03:47 PM

Find skipped reference numbers in the database

This article addresses detecting gaps in database reference numbers. It explores SQL-based solutions (using CTEs or window functions) and alternative methods like spreadsheet software, database management tools, data profiling tools, and programming

Mar 04, 2025 pm 03:46 PM

Automatically backup MySQL backup using Cron Jobs in CPANEL

This article explains how to automate MySQL database backups using cPanel's Cron Jobs. It details creating and scheduling shell scripts using mysqldump, optimizing backup frequency based on data change rate and RPO/RTO, and best practices for stora

Mar 04, 2025 pm 03:45 PM

Complete guide to MariaDB logs: auditing, configuration, etc.

This guide comprehensively explains MariaDB logging. It details various log types (error, slow query, general query, binary, relay), their configuration, and troubleshooting uses. Effective log management is crucial for database integrity, security

Mar 04, 2025 pm 03:44 PM

Geospatial in Laravel: Optimizations for interactive maps and large volumes of data

Using geospatial technologies to generate actionable insights from more than 7 million records: a case study with Laravel and MySQL. This article details like Laravel and MySQL were used to create interactive maps efficient

Jan 30, 2025 am 12:20 AM

Remote Senior Back-End Engineer (Platform) Needed at Circle

Circle is Hiring: Remote Senior Back-End Engineer (Platform) About the Role: Circle seeks a highly skilled Senior Back-End Engineer to contribute to the development of our mobile app and public APIs. This fully remote, full-time position offers a co

Jan 29, 2025 pm 10:06 PM

How to Check Which Tables Contain Data in a Database

In database management, it is important to quickly identify the table of data containing data, which helps to investigate problems, maintain databases or understand the structure and use of the database. This article describes whether there is data in the check form in different relationship database management systems (RDBMS). Postgresql PostgreSQL uses pg_cataLog.pg_tables to dynamically generate query to check all the lines of all tables in the architecture: Use PL/PGSQL block: DO $ $ Declare TBL Record; Begin For TBL in Select schemaname, T

Jan 29, 2025 pm 04:04 PM

How to Count the Number of Tables in a Database

In database management, the number of tables in the database is often required, which is very practical in database audit, documentation or maintenance. Most relational database management systems (RDBMS) provide convenient methods to count the number of forms by system directory or information mode. Here are several statistical methods for commonly used databases. PostgreSQL database In postgreSQL, you can use the information_schema.tables view to query the number of forms in specific mode: Select count (*) From information_schema.tables Where table

Jan 29, 2025 pm 04:02 PM

Running multiple MySQL versions on macOS: A Step-by-Step Guide

Running multiple MySQL versions on macOS can be challenging due to conflicting configurations and ports. SnapDB simplifies this, enabling you to easily manage multiple MySQL servers on distinct ports without needing Docker, Homebrew, or other depend

Jan 29, 2025 am 08:33 AM

Mastering MariaDB: A Comprehensive Guide to Performance Tuning

This guide offers practical tips for optimizing your MariaDB server performance. Fine-tuning is crucial for maintaining peak efficiency and speed. We'll cover adjusting settings, employing effective indexing, and monitoring key metrics. 1. Leverage

Jan 28, 2025 am 12:02 AM