Tables organize data like users, invoices, posts, or sessions. Designing the right tables makes querying, permissions, and future changes easier.
ELI5
Think of Table as a labeled box where an app keeps important things. A database structure that stores rows of related data under named columns.
In practice
Use it when a feature reads, writes, migrates, validates, or audits stored information. In practice, define the owner, input, output, and failure mode before you rely on it.