Name for data set References the variable which holds the primary key or index values. References the variable scheme from which identifying values may be inherited by the items contained in the data set. This allows for only the ID values to be specified at the item level, to avoid needless repetition. Storage for the traditional rectangular form of data. Storage form for random order item variables. Storage form that captures all values of each variable together. Storage for the traditional rectangular form of data. Holds the sequence of variable references in storage order. Holds the sequence of record values in storage order, as described in VariableOrder. Holds the sequence of variable references in storage order. References variables in storage order. One reference per variable. Holds the sequence of record values in storage order, as described by VariableOrder. Holds the value in the record. Storage form for random item value order. Identifies and holds the item value. References the variable associated with the value given. Holds the value of the records identifying field/key. Holds the item value. Identifies the variable which holds the primary key or index values. Identifies the variable scheme from which identifying values may be inherited by the items contained in the data set. This allows for only the ID values to be specified at the item level, to avoid needless repetition. Identifies the data set. References the variable associated with the value given. Storage form for capturing all values of each variable together The set of values associated with a single variable (values included in a column in rectangular data sets). The set of values associated with a single variable (values included in a column in rectangular data sets). References the variable associated with the values given. Value associated with the referenced variable.