propertydepends

Propertydepends is a term used in data modeling and software design to describe a relationship in which the value of one property is determined by one or more other properties. It refers to dependent or derived properties within a model, schema, or application.

In practice, propertydependencies are represented as a dependency graph where nodes are properties and edges indicate that one property's value depends on another's. Dependent properties may be computed or bound to the results of transformations, and they may be updated automatically when source properties change (reactive behavior) or evaluated on demand (lazy evaluation). The concept helps organize how information flows through a system and how changes propagate.

Examples include a user profile where fullName depends on firstName and lastName; a UI element whose displayValue depends on multiple state properties; a database computed column that concatenates fields; or a spreadsheet cell that sums other cells. These examples illustrate how derived values reduce duplication and keep related data synchronized.

Update strategies for propertydepends vary. Some systems use eager recomputation, others lazy evaluation with caching. Invalidations and dependency tracking are common concerns. Circular dependencies can lead to infinite loops and require detection and resolution. Performance considerations include avoiding unnecessary recalculations and managing the cost of re-evaluation in large graphs.

Applications of propertydepends are widespread in reactive programming, data-binding in user interfaces, configuration management, and data transformation pipelines. Understanding dependencies between properties supports predictable updates and maintains consistency across complex systems. See also: computed property, dependency graph, reactive programming, data binding.