Zac Efron's middle names are David and Alexander.
In metadata an indicator is a Boolean value that may contain only the values true or false .. metadata. metadata. Boolean. Boolean logic. The definition of an Indicator must include the meaning of a true value and should also include the meaning if the value is false .. If a data element may take another value to represent e.g. unknown or not applicable , then a Code should be used instead of an Indicator , and the meanings of all possible values should be clearly defined .. data element. data element. Code. Code. The suffix Indicator is used in ISO / IEC 11179 metadata registry standard as a representation term .. metadata. metadata. ISO / IEC 11179. ISO / IEC 11179. representation term. representation term