idtimestampvalueunit

Idtimestampvalueunit is a compact data record schema used to store a measured quantity along with its identifier, the time of measurement, and the unit of the value. It is commonly applied in time-stamped logging, telemetry, and data interchange for sensors and experiments.

The four fields are typically defined as follows:

- id: a unique identifier for the record, often a UUID or numeric primary key. It enables unambiguous reference to the specific measurement.

- timestamp: the moment the measurement was taken. Standards often favor ISO 8601 formatted strings or epoch time, with UTC being the preferred time zone to avoid ambiguity.

- value: the numeric measurement itself. This can be an integer or floating-point number, and precision should match the needs of the application.

- unit: a string describing the measurement unit (for example, "C" or "°C" for Celsius, "m" for meters). Using a controlled vocabulary or standard units improves interoperability.

Typical uses include recording sensor readings, experimental results, or events where a numeric quantity is observed at a specific time. Proper validation ensures non-null fields, consistent formats, and alignment between value and unit. In storage and querying, indexing by timestamp and id supports efficient time-range queries and record retrieval, while large-scale deployments may employ time-series databases for optimized performance.

Example: a record with id "a1b2c3", timestamp "2024-07-01T14:23:00Z", value 42.7, unit "°C" represents a measured temperature at a precise moment.

Variants may omit the id, use composite keys, or store units separately for normalization. The idtimestampvalueunit pattern remains a straightforward, interoperable model for time-stamped quantitative data.