Reservedat

Reservedat, typically written as reserved_at or reservedAt, refers to a timestamp field used in information systems to record when a resource is reserved. It is a common component of reservation, booking, and scheduling systems, where it marks the moment a reservation is created or confirmed for a given resource such as seats, rooms, equipment, or services.

Naming and conventions vary by language and framework. Reserved_at (snake_case) is prevalent in SQL databases and Python code, while reservedAt (camelCase) is common in JavaScript and other languages with camel-case conventions. Some schemas also use reserved_timestamp or reserved_on. The underlying data type is usually a datetime, timestamp, or timestamp with time zone (for example TIMESTAMP, DATETIME, or TIMESTAMPTZ), and the value is often stored in UTC to simplify cross-timezone operations.

Behavior and semantics can differ by system. reserved_at is typically set when a reservation is confirmed and may be immutable thereafter, though some systems allow updates if the reservation time changes. It may be left null if a reservation has not yet been made, depending on business rules. Defaults are commonly implemented with database functions such as CURRENT_TIMESTAMP or NOW().

Usage considerations include indexing reserved_at to support time-based queries, handling time zones consistently, and documenting the business rules around when and how the value is set or updated. Example: in PostgreSQL, a table with reserved_at TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP supports queries like finding reservations created in the last 24 hours.