Sorted:

How to use views in SQLite?

How to perform full-text search in SQLite?

How to handle cross-table queries in SQLite?

How can performance tuning be done in SQLite?

How to set up password protection in Redis?

How to view the current number of databases in Redis?

How is the fuser command used in Linux?

How to use foreign keys and constraints in PostgreSQL?

How can you optimize query statements in SQLite?

How can performance tuning and query optimization be done in PostgreSQL?