# ComputedIdentifier.h File Reference

`#include <FdoStd.h>`
`#include <Fdo/Expression/Identifier.h>`

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## Classes
class | FdoComputedIdentifier
| The FdoComputedIdentifier class derives from FdoIdentifier and represents an expression with alias. The name or alias must be a simple name and should not be scoped or contain the the schema name. The FdoComputedIdentifier can be used to provide an alias to an expression. For example the expression Length*NumLanes can be refered to as MaxTraficCapacity. In this case, a computed identifier can be created as:. More...