Storage and database

• Migrations
  • Migration location and naming
  • Fresh installations
  • Writing durable migrations
  • Construction of migration classes
  • Example: replacing a column
  • Example: modifying and transforming a column
  • Processing data in batches
  • Set-based updates
  • Migration metadata
  • Console commands
  • Adding indices
  • Replacing indices
• Database access
  • Transactions
  • Mappers
  • Entities
  • Table management tips
  • Querying the database provider
  • Supporting more databases
• Configuration
  • System values
  • App values
  • User values
• Nextcloud filesystem API
  • Node API
• AppData
  • The simple filesystem