Here follows a list of all identifiers of Fib database objects, which are used in the main-Fib-object or also in sub-root-objects. The storing of this identifiers is optional. If identifiers are present, it can be tested from the outset, that all external Fib objects from the database, that are needed, exists or whether it is likely that display errors occur, since database objects are missing. Whether the identifier of a Fib database object is given in the root-element in which main-Fib-object the database object is needed or in a higher root-element, depends on several factors. For the changing of the Fib objects, it is advantageous, that the identifier of a Fib database object is given in a root-element, which is near the place of its use. For storage space reasons in the compressed storage form it may be useful to store the identifier of used database objects in as few as possible root-elements.
The name of the corresponding XML element for the database identifier is database_identifier. It contains, for each specified database identifier, an XML element named identifier. This XML element identifier in turn, contains an (negative) integer for the used database identifier.
An example for the the identifiers of used database objects:
<database_identifier> <identifier>-21</identifier> <identifier>-632</identifier> </database_identifier>