KeenWP

Curated resource guide

WordPress Database and Data Modelling Resources

Choose the right WordPress data model before performance and maintenance problems become structural. This collection covers the core schema, query APIs, metadata, options, transients, custom tables, indexes, migrations, multisite data, integrity, and practical tradeoffs for sites and products with growing datasets.

Scope

What this guide covers

  • WordPress core schema
  • posts, postmeta, options, users, usermeta, terms and comments
  • $wpdb
  • prepared queries
  • WP_Query, WP_User_Query, WP_Comment_Query and term queries
  • metadata APIs
  • Options API
  • Transients API
  • custom tables
  • dbDelta and schema migrations
  • indexes
  • serialized data
  • autoloaded options
  • object caching interaction
  • transactions and locking limitations
  • large datasets
  • pagination
  • search
  • data integrity
  • multisite tables
  • custom order storage concepts
  • database versioning
  • backups before migrations
  • security
  • performance profiling
  • and choosing between core tables, metadata and custom tables

Selected references

Curated resources

Links open the original publisher so you can use the complete, current material in context.

  1. 01
    5
    Recommended starting point

    WordPress Database API

    The official overview of safe querying, prepared statements, result handling, and database access.

    developer.wordpress.org
  2. 02
    5

    wpdb Class Reference

    The authoritative reference for WordPress database queries, placeholders, results, and error handling.

    developer.wordpress.org
  3. 03
    5

    WordPress Database Description

    A practical map of Core tables and the relationships behind common WordPress data.

    developer.wordpress.org
  4. 04
    3

    Plugin Metadata

    Official guidance for working with post metadata and custom meta boxes. The examples clarify when metadata fits a plugin and how to manage it through WordPress APIs.

    developer.wordpress.org
  5. 05
    5

    Options API

    Store site configuration through supported APIs while understanding autoload and serialization behavior.

    developer.wordpress.org
  6. 06
    5

    Creating Tables with Plugins

    Plan custom tables, activation-time creation, schema versions, and upgrades with dbDelta.

    developer.wordpress.org
  7. 07
    5

    dbDelta() Reference

    Use and troubleshoot the Core schema comparison function used by plugin database migrations.

    developer.wordpress.org