SQL Isolation Levels Explained: Read Committed, Snapshot, Repeatable Read, and Serializable
A guide to SQL isolation levels — Read Committed, Repeatable Read, Snapshot, and Serializable — covering trade-offs, write skew, and when to use each.
PostgreSQL to Redshift Migration: A Schema-Level Guide
How to migrate a PostgreSQL schema to Amazon Redshift: data type mapping, unenforced constraints, distribution/sort keys, and in-place ALTER limits.
MySQL vs MariaDB: Schema Differences You Need to Know
MySQL and MariaDB share a wire protocol but diverge on JSON types, sequences, generated columns, and CHECK constraint enforcement. Here's what breaks.
OFFSET vs Last ID Pagination: Which Is Better for Database Performance?
OFFSET pagination gets slower as tables grow and users page deeper in. Last ID (keyset/cursor) pagination stays fast and stable. Here's when to use each.
Views and Materialized Views Across Database Dialects
Views and materialized views rarely survive a cross-dialect migration unchanged. Here's what breaks, what Db2 MQTs and Postgres materialized views have in common, and how to migrate them safely.
Collation and Charset Pitfalls in Cross-Dialect Schema Migrations
How collation and charset defaults differ across MySQL, PostgreSQL, SQL Server, and Oracle, and how to catch mismatches before a migration ships.
Learn SQL Queries Using Your Own Excel Data (Import, Query, Export)
Export an Excel sheet to CSV, import it into FoxSchema's SQL Editor, write real SQL queries and joins against it, then export results back to CSV.
Data Masking for Dev Environments with FoxScript and Faker.js
How to mask sensitive data for dev/staging using FoxSchema's bundled @faker-js/faker import in FoxScript, with deterministic seeding and Server Beam.
Server Insights: Connection Pool, Sessions, and Table Sizes at a Glance
How FoxSchema's Server Insights utility surfaces connection pool health, active sessions, host resources, and table/index sizes per dialect.
Server Beam: Moving Data Between Two Databases with SQL and JavaScript
How FoxSchema's Server Beam moves data across two live database connections using sql.on(alias), bind parameters, and a 20-call-per-run safety cap.
